Difference between revisions of "Bash/Prompt customization"

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[[zh-CN:Color Bash Prompt]]
 
[[zh-CN:Color Bash Prompt]]
 
{{Related articles start}}
 
{{Related articles start}}
{{Related|Environment variables}}
 
 
{{Related|Bash}}
 
{{Related|Bash}}
 +
{{Related|Environment variables}}
 
{{Related articles end}}
 
{{Related articles end}}
There are a variety of possibilities for [[Bash]]'s prompt (PS1), and customizing it can help you be more productive at the command line. You can add additional information to your prompt, or you can simply add color to it to make the prompt stand out. See [https://bbs.archlinux.org/viewtopic.php?id=50885 this Forum thread] for more information and examples.
+
There are a variety of possibilities for [[Bash]]'s prompt (PS1), and customizing it can help you be more productive at the command line. You can add additional information to your prompt, or you can simply add color to it to make the prompt stand out.
  
 +
== Applying changes ==
  
==Basic prompts==
+
To apply changes from this article to your {{ic|.bashrc}} (without ending [http://mywiki.wooledge.org/SubShell subshells]), do:
 +
$ source ~/.bashrc
 +
 
 +
== Basic prompts ==
  
 
The following settings are useful for distinguishing the root prompt from non-root users.
 
The following settings are useful for distinguishing the root prompt from non-root users.
  
*Edit Bash's personal configuration file:
+
=== Regular user ===
{{bc|<nowiki>$ nano ~/.bashrc</nowiki>}}
+
  
*Comment out the default prompt:
+
A green prompt for ''regular users'':
{{bc|<nowiki># PS1='[\u@\h \W]\$ '</nowiki>}}
+
  
*Add the following green prompt for regular users:
+
<div style="font-family: monospace; white-space: pre; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #0f0">[chiri@zetsubou ~]$</span> <span style="text-decoration: blink;">_</span></div>
<div style="font-family: monospace; white-space: pre; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #0f0">[chiri@zetsubou ~]$</span> <span style="text-decoration: blink;">_</span></div>
+
{{hc|~/.bashrc|
{{bc|<nowiki>PS1='\[\e[1;32m\][\u@\h \W]\$\[\e[0m\] '</nowiki>}}
+
<nowiki>#PS1='[\u@\h \W]\$ '  # Default
 +
PS1='\[\e[1;32m\][\u@\h \W]\$\[\e[0m\] '</nowiki>}}
  
*Edit root's .bashrc file; copy it from /etc/skel if the file is not present:
+
=== Root ===
{{bc|<nowiki>$ nano /root/.bashrc</nowiki>}}
+
*Assign a red prompt for root:
+
  
<div style="font-family: monospace; white-space: pre; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #f00">[root@zetsubou ~]#</span> <span style="text-decoration: blink;">_</span></div>
+
A red prompt for ''root'' (copy from {{ic|/etc/skel/}}, if not already):
{{bc|<nowiki>PS1='\[\e[1;31m\][\u@\h \W]\$\[\e[0m\] '</nowiki>}}
+
  
===Slightly fancier prompts===
+
<div style="font-family: monospace; white-space: pre; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #f00">[root@zetsubou ~]#</span> <span style="text-decoration: blink;">_</span></div>
 +
{{hc|/root/.bashrc|
 +
<nowiki>#PS1='[\u@\h \W]\$ '  # Default
 +
PS1='\[\e[1;31m\][\u@\h \W]\$\[\e[0m\] '</nowiki>}}
  
*A green and blue prompt for regular users:
+
== Slightly fancier prompts ==
<div style="font-family: monospace; white-space: pre; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #0a0">chiri</span> <span style="color: #00f">~/docs</span> <span style="color: #0f0">$</span> echo "sample output text"<br />sample output text<br /><span style="color: #0a0">chiri</span> <span style="color: #00f">~/docs</span> <span style="color: #0f0">$</span> <span style="text-decoration: blink;">_</span></div>
+
 
 +
=== Regular user ===
 +
 
 +
A green/blue prompt for ''regular users'':
 +
 
 +
<div style="font-family: monospace; white-space: pre; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #0a0">chiri</span> <span style="color: #00f">~/docs</span> <span style="color: #0f0">$</span> echo "sample output text"<br />sample output text<br /><span style="color: #0a0">chiri</span> <span style="color: #00f">~/docs</span> <span style="color: #0f0">$</span> <span style="text-decoration: blink;">_</span></div>
 
{{bc|<nowiki>PS1='\[\e[0;32m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[1;32m\]\$\[\e[m\] \[\e[1;37m\]'</nowiki>}}
 
{{bc|<nowiki>PS1='\[\e[0;32m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[1;32m\]\$\[\e[m\] \[\e[1;37m\]'</nowiki>}}
  
 
This will give a very pleasing, colorful prompt and theme for the console with bright white text.
 
This will give a very pleasing, colorful prompt and theme for the console with bright white text.
  
The string above contains color-set escape sequences (start coloring: \[\e[color\], end coloring: \[\e[m\]) and information placeholders:
+
The string above contains color-set escape sequences (start coloring: {{ic|\[\e[''color''\]}}, end coloring: {{ic|\[\e[m\]}}) and information placeholders:
  
* \u - Username. The original prompt also has \h, which prints the host name.
+
* '''\u''' - Username. The original prompt also has '''\h''', which prints the host name.
* \w - Current absolute path. Use \W for current relative path.
+
* '''\w''' - Current absolute path. Use '''\W''' for current relative path.
* \$ - The prompt character (eg. '#' for root, '$' for regular users).  
+
* '''\$''' - The prompt character (eg. {{ic|#}} for root, {{ic|$}} for regular users).  
  
The last color-set sequence, "\[\e[1;37m\]", is not closed, so the remaining text (everything typed into the terminal, program output and so on) will be in that (bright white) color. It may be desirable to change this color, or to delete the last escape sequence in order to leave the actual output in unaltered color.  
+
The last color-set sequence, {{ic|\[\e[1;37m\]}}, is not closed, so the remaining text (everything typed into the terminal, program output and so on) will be in that (bright white) color. It may be desirable to change this color, or to delete the last escape sequence in order to leave the actual output in unaltered color.  
  
*A red and blue prompt for root:
+
=== Root ===
<div style="font-family: monospace; white-space: pre; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #a00">root</span> <span style="color: #00f">~/docs</span> <span style="color: #a00">#</span> <span style="color: #0a0">echo "sample output text"<br />sample output text<br /></span><span style="color: #a00">root</span> <span style="color: #00f">~/docs</span> <span style="color: #a00">#</span> <span style="color: #0a0"><span style="text-decoration: blink;">_</span></span></div>
+
 
 +
A red/blue prompt for ''root'':
 +
 
 +
<div style="font-family: monospace; white-space: pre; padding: 1em; border: 3px solid #bcd; background-color: black; color: #aaa;"><span style="color: #a00">root</span> <span style="color: #00f">~/docs</span> <span style="color: #a00">#</span> <span style="color: #0a0">echo "sample output text"<br />sample output text<br /></span><span style="color: #a00">root</span> <span style="color: #00f">~/docs</span> <span style="color: #a00">#</span> <span style="color: #0a0"><span style="text-decoration: blink;">_</span></span></div>
 
{{bc|<nowiki>PS1='\[\e[0;31m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[0;31m\]\$ \[\e[m\]\[\e[0;32m\]'</nowiki>}}
 
{{bc|<nowiki>PS1='\[\e[0;31m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[0;31m\]\$ \[\e[m\]\[\e[0;32m\]'</nowiki>}}
  
 
This will give you a red designation and green console text.
 
This will give you a red designation and green console text.
  
Once you have made your changes to .bashrc, to execute your changes:
+
== Advanced prompts ==
 
+
{{bc|<nowiki>$ source ~/.bashrc</nowiki>}}
+
  
==Advanced prompts==
+
=== Load/Mem Status for 256colors ===
  
===Load/Mem Status for 256colors===
+
This is not even pushing the limits. Other than using {{ic|sed}} to parse the memory and load average (using the {{ic|-u}} option for non-buffering), and the builtin ''history'' to save your history to your {{ic|HISTFILE}} after every command, which you may find incredibly useful when dealing with crashing shells or subshells, this is essentially just making BASH print variables it already knows, making this extremely fast compared to prompts with non-builtin commands.
This is not even pushing the limits. Other than using 'sed' to parse the memory and load average (using the ''-u'' option for non-buffering), and the builtin ''history'' to save your history to your ''HISTFILE'' after every command, which you may find incredibly useful when dealing with crashing shells or subshells, this is essentially just making BASH print variables it already knows, making this extremely fast compared to prompts with non-builtin commands.
+
  
 
This prompt is from AskApache.com's [http://www.askapache.com/linux-unix/bash-power-prompt.html BASH Power Prompt article], which goes into greater detail.  It is especially helpful for those wanting to understand 256 color terminals, ncurses, termcap, and terminfo.
 
This prompt is from AskApache.com's [http://www.askapache.com/linux-unix/bash-power-prompt.html BASH Power Prompt article], which goes into greater detail.  It is especially helpful for those wanting to understand 256 color terminals, ncurses, termcap, and terminfo.
  
This is for '''256 color terminals''', which is where the '''\033[38;5;22m''' terminal escapes come from.   
+
This is for '''256 color terminals''', which is where the {{ic|\033[38;5;22m}} terminal escapes come from.   
 
{{bc|1=
 
{{bc|1=
 
<span style="color:#0b0">802</span><span style="color:#005f00">/1024MB</span>      <span style="color:#5f00af">1.28 1.20 1.13 3/94 18563</span>
 
<span style="color:#0b0">802</span><span style="color:#005f00">/1024MB</span>      <span style="color:#5f00af">1.28 1.20 1.13 3/94 18563</span>
Line 77: Line 85:
 
PS1='\[\e[m\n\e[1;30m\][$$:$PPID \j:\!\[\e[1;30m\]]\[\e[0;36m\] \T \d \[\e[1;30m\][\[\e[1;34m\]\u@\H\[\e[1;30m\]:\[\e[0;37m\]${SSH_TTY} \[\e[0;32m\]+${SHLVL}\[\e[1;30m\]] \[\e[1;37m\]\w\[\e[0;37m\] \n($SHLVL:\!)\$ '</nowiki>}}
 
PS1='\[\e[m\n\e[1;30m\][$$:$PPID \j:\!\[\e[1;30m\]]\[\e[0;36m\] \T \d \[\e[1;30m\][\[\e[1;34m\]\u@\H\[\e[1;30m\]:\[\e[0;37m\]${SSH_TTY} \[\e[0;32m\]+${SHLVL}\[\e[1;30m\]] \[\e[1;37m\]\w\[\e[0;37m\] \n($SHLVL:\!)\$ '</nowiki>}}
  
===List of colors for prompt and Bash===
+
=== List of colors for prompt and Bash ===
  
 
Add this to your Bash file(s) to define colors for prompt and commands:
 
Add this to your Bash file(s) to define colors for prompt and commands:
Line 191: Line 199:
 
To use in commands from your shell environment:
 
To use in commands from your shell environment:
  
<div style="font-family: monospace; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;">$ echo -e "${txtblu}test"<br /><span style="color: blue;">test</span><br />$ echo -e "${bldblu}test"<br /><span style="color: lightblue;"><strong>test</strong></span><br />$ echo -e "${undblu}test"<br /><span style="color: lightblue;"><strong><span style="text-decoration: underline;">test</span></strong></span><br />$ echo -e "${bakblu}test"<br /><span style="color: white; background-color: lightblue;"><strong>test</strong></span><br />$ <span style="text-decoration: blink;">_</span></div>
+
<div style="font-family: monospace; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;">$ echo -e "${txtblu}test"<br /><span style="color: blue;">test</span><br />$ echo -e "${bldblu}test"<br /><span style="color: lightblue;"><strong>test</strong></span><br />$ echo -e "${undblu}test"<br /><span style="color: lightblue;"><strong><span style="text-decoration: underline;">test</span></strong></span><br />$ echo -e "${bakblu}test"<br /><span style="color: white; background-color: lightblue;"><strong>test</strong></span><br />$ <span style="text-decoration: blink;">_</span></div>
 
+
To use in a prompt (note double quotes to enable $color variable expansion and <nowiki>\[ \]</nowiki> escapes around them so they are not counted as character positions and the cursor position is not wrong):
+
  
 
{{bc|<nowiki>PS1="\[$txtblu\]foo\[$txtred\] bar\[$txtrst\] baz : "</nowiki>}}
 
{{bc|<nowiki>PS1="\[$txtblu\]foo\[$txtred\] bar\[$txtrst\] baz : "</nowiki>}}
  
If you experience premature line wrapping when entering commands at the prompt then missing escapes is most likely to be the reason.
+
Double quotes enable {{ic|$color}} variable expansion and the {{ic|<nowiki>\[ \]</nowiki>}} escapes around them make them not count as character positions and the cursor position is not wrong.
 +
 
 +
{{Note|If experiencing premature line wrapping when entering commands, then missing escapes ({{ic|<nowiki>\[ \]</nowiki>}}) is most likely the reason.}}
  
 
=== Prompt escapes ===
 
=== Prompt escapes ===
Line 254: Line 262:
  
 
=== Positioning the cursor ===
 
=== Positioning the cursor ===
 
{{Accuracy|The last example don't work (at least on Bash). Seems to have a problem in '''\[\033[1;\$((COLUMNS-4))f\]'''}}
 
  
 
The following sequence sets the cursor position:
 
The following sequence sets the cursor position:
Line 269: Line 275:
 
{{bc|<nowiki>\[\033[u\]</nowiki>}}
 
{{bc|<nowiki>\[\033[u\]</nowiki>}}
  
 +
{{Accuracy|Does't work. Seems to have a problem in {{ic|\[\033[1;\$((COLUMNS-4))f\]}}.}}
 
The following example uses these sequences to display the time in the upper right corner:
 
The following example uses these sequences to display the time in the upper right corner:
  
 
{{bc|<nowiki>PS1="&gt;\[\033[s\]\[\033[1;\$((COLUMNS-4))f\]\$(date +%H:%M)\[\033[u\]"</nowiki>}}
 
{{bc|<nowiki>PS1="&gt;\[\033[s\]\[\033[1;\$((COLUMNS-4))f\]\$(date +%H:%M)\[\033[u\]"</nowiki>}}
  
The environment variable ''COLUMNS'' contains the number of columns of the terminal. The above example substracts 4 from its value in order to justify the five character wide output of ''date'' at the right border.
+
The environment variable {{ic|COLUMNS}} contains the number of columns of the terminal. The above example substracts ''4'' from its value in order to justify the five character wide output of {{ic|date}} at the right border.
  
===Return value visualisation===
+
=== Return value visualisation ===
  
Use this prompt if you want to see the return value of the last executed command.
+
Use the following prompt to see the return value of last command:
 +
 
 +
<div style="font-family: monospace; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;">0 <span style="color: green;">;)</span>&nbsp;: true<br />0 <span style="color: green;">;)</span>&nbsp;: false<br />1 <span style="color: red;">;(</span>&nbsp;:</div>
  
 
{{bc|<nowiki>#return value visualisation
 
{{bc|<nowiki>#return value visualisation
 
PS1="\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[0;32m\];)\"; else echo \"\[\033[0;31m\];(\"; fi)\[\033[00m\] : "</nowiki>}}
 
PS1="\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[0;32m\];)\"; else echo \"\[\033[0;31m\];(\"; fi)\[\033[00m\] : "</nowiki>}}
  
This will give you basic prompt:
+
''Zero'' is a green smiley and ''non-zero'' a red one. So your prompt will smile if the last operation was successful.
<div style="font-family: monospace; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;">0 <span style="color: green;">;)</span>&nbsp;: true<br />0 <span style="color: green;">;)</span>&nbsp;: false<br />1 <span style="color: red;">;(</span>&nbsp;:</div>
+
 
+
Zero is a green smiley (replace it with anything you want) and non-zero is a red one. So your prompt will smile if the last operation was successful.
+
 
+
But you will probably want to use the return value in your own prompt, like this:
+
  
<div style="font-family: monospace; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;"><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">;) andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> true<br /><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">;) andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> false<br /><span style="font-weight: bold;">1</span> <span style="color: #a00; font-weight: bold;">;(</span> <span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> <span style="text-decoration: blink;">_</span></div>
+
But you will probably want to include the username and hostname as well, like this:
  
with a code like this one:
+
<div style="font-family: monospace; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;"><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">;) andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> true<br /><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">;) andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> false<br /><span style="font-weight: bold;">1</span> <span style="color: #a00; font-weight: bold;">;(</span> <span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> <span style="text-decoration: blink;">_</span></div>
  
 
{{bc|<nowiki>#return value visualisation
 
{{bc|<nowiki>#return value visualisation
Line 298: Line 302:
 
Or, if you want, you can build your prompt using the <span style="color: #0a0; font-weight: bold;">&#10003;</span> unicode symbol for a ''zero'' status and the <span style="color: #a00; font-weight: bold;">&#10007;</span> unicode symbol for a ''nonzero'' status:
 
Or, if you want, you can build your prompt using the <span style="color: #0a0; font-weight: bold;">&#10003;</span> unicode symbol for a ''zero'' status and the <span style="color: #a00; font-weight: bold;">&#10007;</span> unicode symbol for a ''nonzero'' status:
  
<div style="font-family: monospace; margin: 1em 3em; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;"><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">&#10003; andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> true<br /><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">&#10003; andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> false<br /><span style="font-weight: bold;">1</span> <span style="color: #a00; font-weight: bold;">&#10007;</span> <span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> I\ will\ try\ to\ type\ a\ wrong\ command...<br />bash: I will try to type a wrong command...: command not found<br /><span style="font-weight: bold;">127</span> <span style="color: #a00; font-weight: bold;">&#10007;</span> <span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> <span style="text-decoration: blink;">_</span></div>
+
<div style="font-family: monospace; padding: 1em; border: 3px solid #bcd; background-color: black; color: #fff;"><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">&#10003; andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> true<br /><span style="font-weight: bold;">0</span> <span style="color: #0a0; font-weight: bold;">&#10003; andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> false<br /><span style="font-weight: bold;">1</span> <span style="color: #a00; font-weight: bold;">&#10007;</span> <span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> I\ will\ try\ to\ type\ a\ wrong\ command...<br />bash: I will try to type a wrong command...: command not found<br /><span style="font-weight: bold;">127</span> <span style="color: #a00; font-weight: bold;">&#10007;</span> <span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="color: #55f; font-weight: bold;">~ $</span> <span style="text-decoration: blink;">_</span></div>
 
+
starting from a code like this other one:
+
  
 
{{bc|<nowiki>#return value visualisation
 
{{bc|<nowiki>#return value visualisation
 
PS1="\[\033[01;37m\]\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\"; fi) $(if [[ ${EUID} == 0 ]]; then echo '\[\033[01;31m\]\h'; else echo '\[\033[01;32m\]\u@\h'; fi)\[\033[01;34m\] \w \$\[\033[00m\] "</nowiki>}}
 
PS1="\[\033[01;37m\]\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\"; fi) $(if [[ ${EUID} == 0 ]]; then echo '\[\033[01;31m\]\h'; else echo '\[\033[01;32m\]\u@\h'; fi)\[\033[01;34m\] \w \$\[\033[00m\] "</nowiki>}}
  
Here's an alternative that only include the error status if it is nonzero:
+
Alternatively, this can be made more [http://stackoverflow.com/a/22362727/1821548 readable] with {{ic|PROMPT_COMMAND}}:
 +
 
 +
{{bc|<nowiki>set_prompt () {
 +
    Last_Command=$? # Must come first!
 +
    Blue='\[\e[01;34m\]'
 +
    White='\[\e[01;37m\]'
 +
    Red='\[\e[01;31m\]'
 +
    Green='\[\e[01;32m\]'
 +
    Reset='\[\e[00m\]'
 +
    FancyX='\342\234\227'
 +
    Checkmark='\342\234\223'
 +
 
 +
    # Add a bright white exit status for the last command
 +
    PS1="$White\$? "
 +
    # If it was successful, print a green check mark. Otherwise, print
 +
    # a red X.
 +
    if [[ $Last_Command == 0 ]]; then
 +
        PS1+="$Green$Checkmark "
 +
    else
 +
        PS1+="$Red$FancyX "
 +
    fi
 +
    # If root, just print the host in red. Otherwise, print the current user
 +
    # and host in green.
 +
    if [[ $EUID == 0 ]]; then
 +
        PS1+="$Red\\h "
 +
    else
 +
        PS1+="$Green\\u@\\h "
 +
    fi
 +
    # Print the working directory and prompt marker in blue, and reset
 +
    # the text color to the default.
 +
    PS1+="$Blue\\w \\\$$Reset "
 +
}
 +
PROMPT_COMMAND='set_prompt'</nowiki>}}
 +
 
 +
Here's an alternative that only includes the error status, if ''non-zero'':
 
{{bc|<nowiki>
 
{{bc|<nowiki>
 
PROMPT_COMMAND='es=$?; [[ $es -eq 0 ]] &amp;&amp; unset error || error=$(echo -e "\e[1;41m $es \e[40m")'
 
PROMPT_COMMAND='es=$?; [[ $es -eq 0 ]] &amp;&amp; unset error || error=$(echo -e "\e[1;41m $es \e[40m")'
 
PS1="${error} ${PS1}"</nowiki>}}
 
PS1="${error} ${PS1}"</nowiki>}}
  
==Different colors for text entry and console output==
+
== Tips and tricks ==
  
If you do not reset the text color at the end of your prompt, both the text you enter and the console text will simply stay in that color. If you want to edit text in a special color but still use the default color for command output, you will need to reset the color after you press enter, but still before any commands get run. You can do this by installing a DEBUG trap in your ~/.bashrc, like this:
+
=== Different colors for text entry and console output ===
  
{{bc|<nowiki>trap 'echo -ne "\e[0m"' DEBUG</nowiki>}}
+
If you do not reset the text color at the end of your prompt, both the text you enter and the console text will simply stay in that color. If you want to edit text in a special color but still use the default color for command output, you will need to reset the color after you press {{ic|Enter}}, but still before any commands get run. You can do this by installing a DEBUG trap, like this:
  
==Laptop battery status on prompt==
+
{{hc|~/.bashrc|
 +
<nowiki>trap 'echo -ne "\e[0m"' DEBUG</nowiki>}}
  
Read [http://www.basicallytech.com/blog/index.php?/archives/110-Colour-coded-battery-charge-level-and-status-in-your-bash-prompt.html this article] and [https://bbs.archlinux.org/viewtopic.php?pid=1156660#p1156660 this post] for details.
+
=== Laptop battery status on prompt ===
  
== Random quotations at logon ==
+
:''See [http://www.basicallytech.com/blog/index.php?/archives/110-Colour-coded-battery-charge-level-and-status-in-your-bash-prompt.html this article] and [https://bbs.archlinux.org/viewtopic.php?pid=1156660#p1156660 this post] for details.''
  
If you want a random quotation at logon (like Slackware) you must install {{Pkg|fortune-mod}}. fortune is a simple program that displays a pseudorandom message from a database of quotations at logon and/or logout. Uncomment the following line from [[Color_Bash_Prompt#.2Fetc.2Fbash.bashrc|our]] {{ic|/etc/bash.bashrc}} file:
+
=== Random quotations at logon ===
{{bc|<nowiki># [[ "$PS1" ]] &amp;&amp; /usr/bin/fortune</nowiki>}}
+
  
If you want to colorize (brown in this example) the random message from fortune, replace the previous commented text with:
+
If you want a random quotation at logon (like Slackware) you must install {{Pkg|fortune-mod}}:
{{bc|<nowiki>[[ "$PS1" ]] &amp;&amp; echo -e "\e[00;33m$(/usr/bin/fortune)\e[00m"</nowiki>}}
+
  
== Colorized Arch latest news at logon ==
+
{{hc|~/.bashrc|
 
+
<nowiki># fortune is a simple program that displays a pseudorandom message
If you want to read the latest news from the [https://www.archlinux.org/news/ Arch official website], instead of a random quotation from fortune, replace the following lines from [[Color_Bash_Prompt#.2Fetc.2Fbash.bashrc|our]] {{ic|/etc/bash.bashrc}} file:
+
{{bc|<nowiki># fortune is a simple program that displays a pseudorandom message
+
 
# from a database of quotations at logon and/or logout.
 
# from a database of quotations at logon and/or logout.
# If you wish to use it, uncomment the following line:
 
  
# [[ "$PS1" ]] &amp;&amp; /usr/bin/fortune</nowiki>}}
+
[[ "$PS1" ]] &amp;&amp; /usr/bin/fortune
with:
+
#[[ "$PS1" ]] &amp;&amp; echo -e "\e[00;33m$(/usr/bin/fortune)\e[00m"  # Color: Brown</nowiki>}}
{{bc|<nowiki># Arch latest news
+
 
 +
=== Colorized Arch latest news at logon ===
 +
 
 +
To read 10 latest news items from the [https://www.archlinux.org/news/ Arch official website], user [https://aur.archlinux.org/account.php?Action=AccountInfo&ID=33208 grufo] has [https://bbs.archlinux.org/viewtopic.php?id=146850 written] a small and coloured RSS escaping script (''scrollable''):
 +
 
 +
<div style="height: 350px; overflow: auto; font-family: monospace; padding: 1em; border: 3px solid #bbccdd; background-color: black; color: #aaaaaa;">&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Arch Linux: Recent news updates</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br />The latest and greatest news from the Arch Linux distribution.<br /><br />&nbsp;<span style="color: #aa0000; font-weight: bold;">en-us Sun, 04 Nov 2012 16:09:46 +0000</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">End of initscripts support</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/end-of-initscripts-support/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Tom Gundersen wrote:<br />As <span style="color: #ffffff;">systemd</span> is now the default init system, Arch Linux is receiving minimal testing on initscripts systems. Due to a lack of resources and interest, we are unlikely to work on fixing <span style="color: #ffffff;">initscripts</span>-specific bugs, and may close them as WONTFIX.<br />We therefore strongly encourage all users to migrate to <span style="color: #ffffff;">systemd</span> as soon as possible. See the <span style="color: #ffffff;">systemd</span> migration guide <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Systemd</nowiki></span> <span style="color: #5555ff;">]</span>.<br />To ease the transition, <span style="color: #ffffff;">initscripts</span> support will remain in the official repositories for the time being, unless otherwise stated. As of January 2013, we will start removing <span style="color: #ffffff;">initscripts</span> support (e.g., <span style="color: #ffffff;">rc</span> scripts) from individual packages without further notice.<br /><br />&nbsp;<span style="color: #ffffff;">Tom Gundersen Sun, 04 Nov 2012 16:09:46 +0000 tag:www.archlinux.org,2012-11-04:/news/end-of-initscripts-support/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">November release of install media available</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/november-release-of-install-media-available/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />The latest snapshot of our install and rescue media can be found on our <span style="color: #aa0000; font-weight: bold;">Download</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://www.archlinux.org/download/</nowiki></span> <span style="color: #5555ff;">]</span> page. The 2012.11.01 ISO image mainly contains minor bug fixes, cleanups and new packages compared to the previous one:<br />&nbsp;<span style="color: #5555ff;">*</span> First media with Linux 3.6<br />&nbsp;<span style="color: #5555ff;">*</span> <span style="background-color: #aa0000;">copytoram=n</span> can be used to not copy the image to RAM on network boot. This is probably unreliable but an option for systems with very low memory.<br />&nbsp;<span style="color: #5555ff;">*</span> <span style="background-color: #aa0000;">cowfile_size</span> boot parameter mainly for persistent COW on VFAT. See the <span style="color: #aa0000; font-weight: bold;">README</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://projects.archlinux.org/archiso.git/plain/docs/README.bootparams?id=v4</nowiki></span> <span style="color: #5555ff;">]</span> file for details.<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Fri, 02 Nov 2012 17:54:15 +0000 tag:www.archlinux.org,2012-11-02:/news/november-release-of-install-media-available/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Bug Squashing Day: Saturday 17th November</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/bug-squashing-day-saturday-17th-november/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Allan McRae wrote:<br />The number of bugs in the Arch Linux bug tracker is creeping up so it is time for some extermination.<br />This is a great way for the community to get involved and help the Arch Linux team. The process is simple. First look at a bug for your favorite piece of software in the bug tracker and check if it still occurs. If it does, check the upstream project for a fix and test it to confirm it works. If there is no fix available, make sure the bug has been filed in the upstream tracker.<br />Join us on the #archlinux-bugs IRC channel. We are spread across timezones, so people should be around all day.<br /><br />&nbsp;<span style="color: #ffffff;">Allan McRae Thu, 01 Nov 2012 12:28:51 +0000 tag:www.archlinux.org,2012-11-01:/news/bug-squashing-day-saturday-17th-november/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">ConsoleKit replaced by logind</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/consolekit-replaced-by-logind/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Allan McRae wrote:<br />With GNOME 3.6, polkit and networkmanager moving to [extra], ConsoleKit has now been removed from the repositories. Any package that previously depended on it now relies on systemd-logind instead. That means that the system must be booted with systemd to be fully functional.<br />In addition to GNOME, both KDE and XFCE are also affected by this change.<br /><br />&nbsp;<span style="color: #ffffff;">Allan McRae Tue, 30 Oct 2012 22:17:39 +0000 tag:www.archlinux.org,2012-10-30:/news/consolekit-replaced-by-logind/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">systemd is now the default on new installations</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/systemd-is-now-the-default-on-new-installations/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Thomas B&auml;chler wrote:<br />The base group now contains the <span style="color: #ffffff;">systemd-sysvcompat</span> package. This means that all new installations will boot with systemd by default.<br />As some packages still lack native systemd units, users can install the <span style="color: #ffffff;">initscripts</span> package and use the <span style="color: #ffffff;">DAEMONS</span> array in <span style="color: #ffffff;">/etc/rc.conf</span> to start services using the legacy rc.d scripts.<br />This change does not affect existing installations. For the time being, the <span style="color: #ffffff;">initscripts</span> and <span style="color: #ffffff;">sysvinit</span> packages remain available from our repositories. However, individual packages may now start relying on the system being booted with systemd.<br />Please refer to <span style="color: #aa0000; font-weight: bold;">the wiki</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Systemd</nowiki></span> <span style="color: #5555ff;">]</span> for how to transition an existing installation to systemd.<br /><br />&nbsp;<span style="color: #ffffff;">Thomas B&auml;chler Sat, 13 Oct 2012 09:29:38 +0000 tag:www.archlinux.org,2012-10-13:/news/systemd-is-now-the-default-on-new-installations/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Install medium 2012.10.06 introduces systemd</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/install-medium-20121006-introduces-systemd/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />The October release of the Arch Linux install medium is available for <span style="color: #aa0000; font-weight: bold;">Download</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://www.archlinux.org/download/</nowiki></span> <span style="color: #5555ff;">]</span> and can be used for new installs or as a rescue system. It contains a set of updated packages and the following notable changes:<br />&nbsp;<span style="color: #5555ff;">*</span> systemd is used to boot up the live system.<br />&nbsp;<span style="color: #5555ff;">*</span> initscripts are no longer available on the live system but are still installed by default on the target system. This is likely to change in the near future.<br />&nbsp;<span style="color: #5555ff;">*</span> EFI boot and setup has been simplified.<br />&nbsp;<span style="color: #5555ff;">*</span> gummiboot is used to display a menu on EFI systems.<br />&nbsp;<span style="color: #5555ff;">*</span> The following new packages are available on the live system: ethtool, fsarchiver, gummiboot-efi, mc, partclone, partimage, refind-efi, rfkill, sudo, testdisk, wget, xl2tpd<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Sun, 07 Oct 2012 16:58:03 +0000 tag:www.archlinux.org,2012-10-07:/news/install-medium-20121006-introduces-systemd/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">New install medium 2012.09.07</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/new-install-medium-20120907/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />As is customary by now there is a new install medium available at the beginning of this month. The live system can be downloaded from <span style="color: #aa0000; font-weight: bold;">Download</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://www.archlinux.org/download/</nowiki></span> <span style="color: #5555ff;">]</span> and be used for new installs or as a rescue system.<br />In addition to a couple of updated packages and bug fixes the following changes stand out:<br />&nbsp;<span style="color: #5555ff;">*</span> First medium with Linux 3.5 (3.5.3)<br />&nbsp;<span style="color: #5555ff;">*</span> The <span style="background-color: #aa0000;">script</span> boot parameter works again (<span style="color: #aa0000; font-weight: bold;">FS#31022</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://bugs.archlinux.org/task/31022</nowiki></span> <span style="color: #5555ff;">]</span>)<br />&nbsp;<span style="color: #5555ff;">*</span> When booting via PXE and NFS or NBD the ISO will be copied to RAM to ensure a more stable usage.<br />&nbsp;<span style="color: #5555ff;">*</span> The live medium contains <span style="background-color: #aa0000;">usb_modeswitch</span> and <span style="background-color: #aa0000;">wvdial</span> which e.g. allows to establish a network connection using an UMTS USB dongle<br />&nbsp;<span style="color: #5555ff;">*</span> Furthermore the newest versions of <span style="background-color: #aa0000;">initscripts</span>, <span style="background-color: #aa0000;">systemd</span> and <span style="background-color: #aa0000;">netcfg</span> are included.<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Sat, 08 Sep 2012 09:48:52 +0000 tag:www.archlinux.org,2012-09-08:/news/new-install-medium-20120907/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Fontconfig 2.10.1 update - manual intervention required</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/fontconfig-2101-update-manual-intervention-required/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Andreas Radke wrote:<br />The fontconfig 2.10.1 update overwrites symlinks created by the former package version. These symlinks need to be removed before the update:<br /><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/20-unhint-small-vera.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/20-fix-globaladvance.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/29-replace-bitmap-fonts.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/30-metric-aliases.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/30-urw-aliases.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/40-nonlatin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/45-latin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/49-sansserif.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/50-user.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/51-local.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/60-latin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/65-fonts-persian.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/65-nonlatin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/69-unifont.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/80-delicious.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/90-synthetic.conf</span><br /><span style="color: #ffffff;">pacman -Syu fontconfig</span><br /><br />Main systemwide configuration should be done by symlinks (especially for autohinting, sub-pixel and lcdfilter):<br /><br /><span style="color: #ffffff;">cd /etc/fonts/conf.d</span><br /><span style="color: #ffffff;">ln -s ../conf.avail/XX-foo.conf</span><br /><br />Also check <span style="color: #aa0000; font-weight: bold;">Font Configuration</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Font_Configuration</nowiki></span> <span style="color: #5555ff;">]</span> and <span style="color: #aa0000; font-weight: bold;">Fonts</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Fonts</nowiki></span> <span style="color: #5555ff;">]</span>.<br /><br />&nbsp;<span style="color: #ffffff;">Andreas Radke Thu, 06 Sep 2012 13:54:23 +0000 tag:www.archlinux.org,2012-09-06:/news/fontconfig-2101-update-manual-intervention-required/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">netcfg-2.8.9 drops deprecated rc.conf compatibility</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/netcfg-289-drops-initscripts-compatibility/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Florian Pritz wrote:<br />Users of <span style="color: #ffffff;">netcfg</span> should configure all interfaces in <span style="color: #ffffff;">/etc/conf.d/netcfg</span> rather than <span style="color: #ffffff;">/etc/rc.conf</span>.<br /><br />&nbsp;Florian Pritz Sat, 11 Aug 2012 20:00:02 +0000 tag:www.archlinux.org,2012-08-11:/news/netcfg-289-drops-initscripts-compatibility/<br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Install media 2012.08.04 available</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/install-media-20120804-available/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />The August snapshot of our live and install media comes with updated packages and the following changes on top of the <span style="color: #aa0000; font-weight: bold;">previous ISO image</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;">/news/install-media-20120715-released/</span> <span style="color: #5555ff;">]</span>:<br />&nbsp;<span style="color: #5555ff;">*</span> GRUB 2.0 instead of the legacy 0.9 version is available.<br />&nbsp;<span style="color: #5555ff;">*</span> The <span style="color: #aa0000; font-weight: bold;">Installation Guide</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Installation_Guide</nowiki></span> <span style="color: #5555ff;">]</span> can be found at <span style="background-color: #aa0000;">/root/install.txt</span>.<br />&nbsp;<span style="color: #5555ff;">*</span> ZSH with <span style="color: #aa0000; font-weight: bold;">Grml's configuration</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>http://grml.org/zsh/</nowiki></span> <span style="color: #5555ff;">]</span> is used as interactive shell to provide a user friendly and more convenient environment. This includes completion support for pacstrap, arch-chroot, pacman and most other tools.<br />&nbsp;<span style="color: #5555ff;">*</span> The network daemon is started by default which will automatically setup your network if DHCP is available.<br />Note that all these changes only affect the live system and not the base system you install using pacstrap. The ISO image can be downloaded from our <span style="color: #aa0000; font-weight: bold;">download page</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;">/download/</span> <span style="color: #5555ff;">]</span>. The next snapshot is scheduled for September.<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Sat, 04 Aug 2012 17:24:30 +0000 tag:www.archlinux.org,2012-08-04:/news/install-media-20120804-available/</span><br /><br /><br /><span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="text-decoration: blink;">_</span></div>
  
 +
{{hc|~/.bashrc|
 +
<nowiki># Arch latest news
 
if [ "$PS1" ]; then
 
if [ "$PS1" ]; then
 
# The characters "&pound;, &sect;" are used as metacharacters. They should not be encountered in a feed...
 
# The characters "&pound;, &sect;" are used as metacharacters. They should not be encountered in a feed...
Line 362: Line 401:
 
s/[&lt;&gt;&pound;&sect;]//g')\n\n";
 
s/[&lt;&gt;&pound;&sect;]//g')\n\n";
 
fi</nowiki>}}
 
fi</nowiki>}}
that is a small and coloured RSS escaping script written by the user [https://aur.archlinux.org/account.php?Action=AccountInfo&ID=33208 grufo] which will display an output like this:
 
  
<div style="height: 350px; overflow: auto; font-family: monospace; margin: 1em 3em; padding: 1em; border: 3px solid #bbccdd; background-color: black; color: #aaaaaa;">&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Arch Linux: Recent news updates</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br />The latest and greatest news from the Arch Linux distribution.<br /><br />&nbsp;<span style="color: #aa0000; font-weight: bold;">en-us Sun, 04 Nov 2012 16:09:46 +0000</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">End of initscripts support</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/end-of-initscripts-support/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Tom Gundersen wrote:<br />As <span style="color: #ffffff;">systemd</span> is now the default init system, Arch Linux is receiving minimal testing on initscripts systems. Due to a lack of resources and interest, we are unlikely to work on fixing <span style="color: #ffffff;">initscripts</span>-specific bugs, and may close them as WONTFIX.<br />We therefore strongly encourage all users to migrate to <span style="color: #ffffff;">systemd</span> as soon as possible. See the <span style="color: #ffffff;">systemd</span> migration guide <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Systemd</nowiki></span> <span style="color: #5555ff;">]</span>.<br />To ease the transition, <span style="color: #ffffff;">initscripts</span> support will remain in the official repositories for the time being, unless otherwise stated. As of January 2013, we will start removing <span style="color: #ffffff;">initscripts</span> support (e.g., <span style="color: #ffffff;">rc</span> scripts) from individual packages without further notice.<br /><br />&nbsp;<span style="color: #ffffff;">Tom Gundersen Sun, 04 Nov 2012 16:09:46 +0000 tag:www.archlinux.org,2012-11-04:/news/end-of-initscripts-support/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">November release of install media available</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/november-release-of-install-media-available/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />The latest snapshot of our install and rescue media can be found on our <span style="color: #aa0000; font-weight: bold;">Download</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://www.archlinux.org/download/</nowiki></span> <span style="color: #5555ff;">]</span> page. The 2012.11.01 ISO image mainly contains minor bug fixes, cleanups and new packages compared to the previous one:<br />&nbsp;<span style="color: #5555ff;">*</span> First media with Linux 3.6<br />&nbsp;<span style="color: #5555ff;">*</span> <span style="background-color: #aa0000;">copytoram=n</span> can be used to not copy the image to RAM on network boot. This is probably unreliable but an option for systems with very low memory.<br />&nbsp;<span style="color: #5555ff;">*</span> <span style="background-color: #aa0000;">cowfile_size</span> boot parameter mainly for persistent COW on VFAT. See the <span style="color: #aa0000; font-weight: bold;">README</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://projects.archlinux.org/archiso.git/plain/docs/README.bootparams?id=v4</nowiki></span> <span style="color: #5555ff;">]</span> file for details.<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Fri, 02 Nov 2012 17:54:15 +0000 tag:www.archlinux.org,2012-11-02:/news/november-release-of-install-media-available/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Bug Squashing Day: Saturday 17th November</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/bug-squashing-day-saturday-17th-november/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Allan McRae wrote:<br />The number of bugs in the Arch Linux bug tracker is creeping up so it is time for some extermination.<br />This is a great way for the community to get involved and help the Arch Linux team. The process is simple. First look at a bug for your favorite piece of software in the bug tracker and check if it still occurs. If it does, check the upstream project for a fix and test it to confirm it works. If there is no fix available, make sure the bug has been filed in the upstream tracker.<br />Join us on the #archlinux-bugs IRC channel. We are spread across timezones, so people should be around all day.<br /><br />&nbsp;<span style="color: #ffffff;">Allan McRae Thu, 01 Nov 2012 12:28:51 +0000 tag:www.archlinux.org,2012-11-01:/news/bug-squashing-day-saturday-17th-november/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">ConsoleKit replaced by logind</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/consolekit-replaced-by-logind/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Allan McRae wrote:<br />With GNOME 3.6, polkit and networkmanager moving to [extra], ConsoleKit has now been removed from the repositories. Any package that previously depended on it now relies on systemd-logind instead. That means that the system must be booted with systemd to be fully functional.<br />In addition to GNOME, both KDE and XFCE are also affected by this change.<br /><br />&nbsp;<span style="color: #ffffff;">Allan McRae Tue, 30 Oct 2012 22:17:39 +0000 tag:www.archlinux.org,2012-10-30:/news/consolekit-replaced-by-logind/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">systemd is now the default on new installations</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/systemd-is-now-the-default-on-new-installations/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Thomas B&auml;chler wrote:<br />The base group now contains the <span style="color: #ffffff;">systemd-sysvcompat</span> package. This means that all new installations will boot with systemd by default.<br />As some packages still lack native systemd units, users can install the <span style="color: #ffffff;">initscripts</span> package and use the <span style="color: #ffffff;">DAEMONS</span> array in <span style="color: #ffffff;">/etc/rc.conf</span> to start services using the legacy rc.d scripts.<br />This change does not affect existing installations. For the time being, the <span style="color: #ffffff;">initscripts</span> and <span style="color: #ffffff;">sysvinit</span> packages remain available from our repositories. However, individual packages may now start relying on the system being booted with systemd.<br />Please refer to <span style="color: #aa0000; font-weight: bold;">the wiki</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Systemd</nowiki></span> <span style="color: #5555ff;">]</span> for how to transition an existing installation to systemd.<br /><br />&nbsp;<span style="color: #ffffff;">Thomas B&auml;chler Sat, 13 Oct 2012 09:29:38 +0000 tag:www.archlinux.org,2012-10-13:/news/systemd-is-now-the-default-on-new-installations/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Install medium 2012.10.06 introduces systemd</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/install-medium-20121006-introduces-systemd/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />The October release of the Arch Linux install medium is available for <span style="color: #aa0000; font-weight: bold;">Download</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://www.archlinux.org/download/</nowiki></span> <span style="color: #5555ff;">]</span> and can be used for new installs or as a rescue system. It contains a set of updated packages and the following notable changes:<br />&nbsp;<span style="color: #5555ff;">*</span> systemd is used to boot up the live system.<br />&nbsp;<span style="color: #5555ff;">*</span> initscripts are no longer available on the live system but are still installed by default on the target system. This is likely to change in the near future.<br />&nbsp;<span style="color: #5555ff;">*</span> EFI boot and setup has been simplified.<br />&nbsp;<span style="color: #5555ff;">*</span> gummiboot is used to display a menu on EFI systems.<br />&nbsp;<span style="color: #5555ff;">*</span> The following new packages are available on the live system: ethtool, fsarchiver, gummiboot-efi, mc, partclone, partimage, refind-efi, rfkill, sudo, testdisk, wget, xl2tpd<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Sun, 07 Oct 2012 16:58:03 +0000 tag:www.archlinux.org,2012-10-07:/news/install-medium-20121006-introduces-systemd/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">New install medium 2012.09.07</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/new-install-medium-20120907/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />As is customary by now there is a new install medium available at the beginning of this month. The live system can be downloaded from <span style="color: #aa0000; font-weight: bold;">Download</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://www.archlinux.org/download/</nowiki></span> <span style="color: #5555ff;">]</span> and be used for new installs or as a rescue system.<br />In addition to a couple of updated packages and bug fixes the following changes stand out:<br />&nbsp;<span style="color: #5555ff;">*</span> First medium with Linux 3.5 (3.5.3)<br />&nbsp;<span style="color: #5555ff;">*</span> The <span style="background-color: #aa0000;">script</span> boot parameter works again (<span style="color: #aa0000; font-weight: bold;">FS#31022</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://bugs.archlinux.org/task/31022</nowiki></span> <span style="color: #5555ff;">]</span>)<br />&nbsp;<span style="color: #5555ff;">*</span> When booting via PXE and NFS or NBD the ISO will be copied to RAM to ensure a more stable usage.<br />&nbsp;<span style="color: #5555ff;">*</span> The live medium contains <span style="background-color: #aa0000;">usb_modeswitch</span> and <span style="background-color: #aa0000;">wvdial</span> which e.g. allows to establish a network connection using an UMTS USB dongle<br />&nbsp;<span style="color: #5555ff;">*</span> Furthermore the newest versions of <span style="background-color: #aa0000;">initscripts</span>, <span style="background-color: #aa0000;">systemd</span> and <span style="background-color: #aa0000;">netcfg</span> are included.<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Sat, 08 Sep 2012 09:48:52 +0000 tag:www.archlinux.org,2012-09-08:/news/new-install-medium-20120907/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Fontconfig 2.10.1 update - manual intervention required</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/fontconfig-2101-update-manual-intervention-required/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Andreas Radke wrote:<br />The fontconfig 2.10.1 update overwrites symlinks created by the former package version. These symlinks need to be removed before the update:<br /><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/20-unhint-small-vera.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/20-fix-globaladvance.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/29-replace-bitmap-fonts.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/30-metric-aliases.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/30-urw-aliases.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/40-nonlatin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/45-latin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/49-sansserif.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/50-user.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/51-local.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/60-latin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/65-fonts-persian.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/65-nonlatin.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/69-unifont.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/80-delicious.conf</span><br /><span style="color: #ffffff;">rm /etc/fonts/conf.d/90-synthetic.conf</span><br /><span style="color: #ffffff;">pacman -Syu fontconfig</span><br /><br />Main systemwide configuration should be done by symlinks (especially for autohinting, sub-pixel and lcdfilter):<br /><br /><span style="color: #ffffff;">cd /etc/fonts/conf.d</span><br /><span style="color: #ffffff;">ln -s ../conf.avail/XX-foo.conf</span><br /><br />Also check <span style="color: #aa0000; font-weight: bold;">Font Configuration</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Font_Configuration</nowiki></span> <span style="color: #5555ff;">]</span> and <span style="color: #aa0000; font-weight: bold;">Fonts</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Fonts</nowiki></span> <span style="color: #5555ff;">]</span>.<br /><br />&nbsp;<span style="color: #ffffff;">Andreas Radke Thu, 06 Sep 2012 13:54:23 +0000 tag:www.archlinux.org,2012-09-06:/news/fontconfig-2101-update-manual-intervention-required/</span><br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">netcfg-2.8.9 drops deprecated rc.conf compatibility</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/netcfg-289-drops-initscripts-compatibility/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Florian Pritz wrote:<br />Users of <span style="color: #ffffff;">netcfg</span> should configure all interfaces in <span style="color: #ffffff;">/etc/conf.d/netcfg</span> rather than <span style="color: #ffffff;">/etc/rc.conf</span>.<br /><br />&nbsp;Florian Pritz Sat, 11 Aug 2012 20:00:02 +0000 tag:www.archlinux.org,2012-08-11:/news/netcfg-289-drops-initscripts-compatibility/<br /><br /><br />&nbsp;&nbsp; <span style="color: #ffffff; font-weight: bold;">::</span> <span style="color: #aa0000; font-weight: bold;">Install media 2012.08.04 available</span> <span style="color: #ffffff; font-weight: bold;">::</span><br />&nbsp;<span style="color: #ffffff;">[</span> <span style="color: #55ccff; font-weight: bold;"><nowiki>https://www.archlinux.org/news/install-media-20120804-available/</nowiki></span> <span style="color: #ffffff;">]</span><br /><br /><br />Pierre Schmitz wrote:<br />The August snapshot of our live and install media comes with updated packages and the following changes on top of the <span style="color: #aa0000; font-weight: bold;">previous ISO image</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;">/news/install-media-20120715-released/</span> <span style="color: #5555ff;">]</span>:<br />&nbsp;<span style="color: #5555ff;">*</span> GRUB 2.0 instead of the legacy 0.9 version is available.<br />&nbsp;<span style="color: #5555ff;">*</span> The <span style="color: #aa0000; font-weight: bold;">Installation Guide</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>https://wiki.archlinux.org/index.php/Installation_Guide</nowiki></span> <span style="color: #5555ff;">]</span> can be found at <span style="background-color: #aa0000;">/root/install.txt</span>.<br />&nbsp;<span style="color: #5555ff;">*</span> ZSH with <span style="color: #aa0000; font-weight: bold;">Grml's configuration</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;"><nowiki>http://grml.org/zsh/</nowiki></span> <span style="color: #5555ff;">]</span> is used as interactive shell to provide a user friendly and more convenient environment. This includes completion support for pacstrap, arch-chroot, pacman and most other tools.<br />&nbsp;<span style="color: #5555ff;">*</span> The network daemon is started by default which will automatically setup your network if DHCP is available.<br />Note that all these changes only affect the live system and not the base system you install using pacstrap. The ISO image can be downloaded from our <span style="color: #aa0000; font-weight: bold;">download page</span> <span style="color: #5555ff;">[</span> <span style="text-decoration: underline;">/download/</span> <span style="color: #5555ff;">]</span>. The next snapshot is scheduled for September.<br /><br />&nbsp;<span style="color: #ffffff;">Pierre Schmitz Sat, 04 Aug 2012 17:24:30 +0000 tag:www.archlinux.org,2012-08-04:/news/install-media-20120804-available/</span><br /><br /><br /><span style="color: #0a0; font-weight: bold;">andy@alba</span> <span style="text-decoration: blink;">_</span></div>
+
To only get the absolute latest item, use this:
  
If you don't want to see months worth of updates but only the latest item, you can use this::
 
 
{{bc|<nowiki># Arch latest news
 
{{bc|<nowiki># Arch latest news
 
 
if [ "$PS1" ]; then
 
if [ "$PS1" ]; then
 
# The characters "&pound;, &sect;" are used as metacharacters. They should not be encountered in a feed...
 
# The characters "&pound;, &sect;" are used as metacharacters. They should not be encountered in a feed...
Line 393: Line 429:
 
fi</nowiki>}}
 
fi</nowiki>}}
  
See [https://bbs.archlinux.org/viewtopic.php?id=146850 this thread] for details.
+
=== Colors overview ===
  
=Colors overview=
+
The page at http://ascii-table.com/ansi-escape-sequences.php describes the various available color escapes. The following Bash function displays a table with ready-to-copy escape codes.
The page at http://ascii-table.com/ansi-escape-sequences.php describes the various available color escapes. The following Bash function (put it in your .bashrc!) displays a table with ready-to-copy escape codes.
+
  
{{bc|<nowiki>
+
{{hc|~/.bashrc|<nowiki>
 
colors() {
 
colors() {
 
local fgc bgc vals seq0
 
local fgc bgc vals seq0
Line 427: Line 462:
 
</nowiki>}}
 
</nowiki>}}
  
=See also=
+
== See also ==
  
If you want to create a style all your own, you can take a look at these tips.
+
If you want to create a style all your own, you can take a look at these tips:
  
 
* The original ''not modified'' Gentoo's {{ic|/etc/bash.bashrc}} file can be found [http://www.jeremysands.com/archlinux/gentoo-bashrc-2008.0 here]. See also the {{AUR|gentoo-bashrc}} package from [[AUR]].
 
* The original ''not modified'' Gentoo's {{ic|/etc/bash.bashrc}} file can be found [http://www.jeremysands.com/archlinux/gentoo-bashrc-2008.0 here]. See also the {{AUR|gentoo-bashrc}} package from [[AUR]].

Revision as of 14:28, 16 March 2014

Related articles

There are a variety of possibilities for Bash's prompt (PS1), and customizing it can help you be more productive at the command line. You can add additional information to your prompt, or you can simply add color to it to make the prompt stand out.

Applying changes

To apply changes from this article to your .bashrc (without ending subshells), do:

$ source ~/.bashrc

Basic prompts

The following settings are useful for distinguishing the root prompt from non-root users.

Regular user

A green prompt for regular users:

[chiri@zetsubou ~]$ _
~/.bashrc
#PS1='[\u@\h \W]\$ '  # Default
PS1='\[\e[1;32m\][\u@\h \W]\$\[\e[0m\] '

Root

A red prompt for root (copy from /etc/skel/, if not already):

[root@zetsubou ~]# _
/root/.bashrc
#PS1='[\u@\h \W]\$ '  # Default
PS1='\[\e[1;31m\][\u@\h \W]\$\[\e[0m\] '

Slightly fancier prompts

Regular user

A green/blue prompt for regular users:

chiri ~/docs $ echo "sample output text"
sample output text
chiri ~/docs $ _
PS1='\[\e[0;32m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[1;32m\]\$\[\e[m\] \[\e[1;37m\]'

This will give a very pleasing, colorful prompt and theme for the console with bright white text.

The string above contains color-set escape sequences (start coloring: \[\e[color\], end coloring: \[\e[m\]) and information placeholders:

  • \u - Username. The original prompt also has \h, which prints the host name.
  • \w - Current absolute path. Use \W for current relative path.
  • \$ - The prompt character (eg. # for root, $ for regular users).

The last color-set sequence, \[\e[1;37m\], is not closed, so the remaining text (everything typed into the terminal, program output and so on) will be in that (bright white) color. It may be desirable to change this color, or to delete the last escape sequence in order to leave the actual output in unaltered color.

Root

A red/blue prompt for root:

root ~/docs # echo "sample output text"
sample output text
root ~/docs # _
PS1='\[\e[0;31m\]\u\[\e[m\] \[\e[1;34m\]\w\[\e[m\] \[\e[0;31m\]\$ \[\e[m\]\[\e[0;32m\]'

This will give you a red designation and green console text.

Advanced prompts

Load/Mem Status for 256colors

This is not even pushing the limits. Other than using sed to parse the memory and load average (using the -u option for non-buffering), and the builtin history to save your history to your HISTFILE after every command, which you may find incredibly useful when dealing with crashing shells or subshells, this is essentially just making BASH print variables it already knows, making this extremely fast compared to prompts with non-builtin commands.

This prompt is from AskApache.com's BASH Power Prompt article, which goes into greater detail. It is especially helpful for those wanting to understand 256 color terminals, ncurses, termcap, and terminfo.

This is for 256 color terminals, which is where the \033[38;5;22m terminal escapes come from.

802/1024MB      1.28 1.20 1.13 3/94 18563
[5416:17880 0:70] 05:35:50 Wed Apr 21 [srot@host.sqpt.net:/dev/pts/0 +1] ~
(1:70)$ _
PROMPT_COMMAND='history -a;echo -en "\033[m\033[38;5;2m"$(( $(sed -nu "s/MemFree:[\t ]\+\([0-9]\+\) kB/\1/p" /proc/meminfo)/1024))"\033[38;5;22m/"$(($(sed -nu "s/MemTotal:[\t ]\+\([0-9]\+\) kB/\1/Ip" /proc/meminfo)/1024 ))MB"\t\033[m\033[38;5;55m$(< /proc/loadavg)\033[m"'
PS1='\[\e[m\n\e[1;30m\][$$:$PPID \j:\!\[\e[1;30m\]]\[\e[0;36m\] \T \d \[\e[1;30m\][\[\e[1;34m\]\u@\H\[\e[1;30m\]:\[\e[0;37m\]${SSH_TTY} \[\e[0;32m\]+${SHLVL}\[\e[1;30m\]] \[\e[1;37m\]\w\[\e[0;37m\] \n($SHLVL:\!)\$ '

List of colors for prompt and Bash

Add this to your Bash file(s) to define colors for prompt and commands:

txtblk='\e[0;30m' # Black - Regular
txtred='\e[0;31m' # Red
txtgrn='\e[0;32m' # Green
txtylw='\e[0;33m' # Yellow
txtblu='\e[0;34m' # Blue
txtpur='\e[0;35m' # Purple
txtcyn='\e[0;36m' # Cyan
txtwht='\e[0;37m' # White
bldblk='\e[1;30m' # Black - Bold
bldred='\e[1;31m' # Red
bldgrn='\e[1;32m' # Green
bldylw='\e[1;33m' # Yellow
bldblu='\e[1;34m' # Blue
bldpur='\e[1;35m' # Purple
bldcyn='\e[1;36m' # Cyan
bldwht='\e[1;37m' # White
unkblk='\e[4;30m' # Black - Underline
undred='\e[4;31m' # Red
undgrn='\e[4;32m' # Green
undylw='\e[4;33m' # Yellow
undblu='\e[4;34m' # Blue
undpur='\e[4;35m' # Purple
undcyn='\e[4;36m' # Cyan
undwht='\e[4;37m' # White
bakblk='\e[40m'   # Black - Background
bakred='\e[41m'   # Red
bakgrn='\e[42m'   # Green
bakylw='\e[43m'   # Yellow
bakblu='\e[44m'   # Blue
bakpur='\e[45m'   # Purple
bakcyn='\e[46m'   # Cyan
bakwht='\e[47m'   # White
txtrst='\e[0m'    # Text Reset

Or if you prefer color names you will know how to spell without a special decoder ring and want high intensity colors:

# Reset
Color_Off='\e[0m'       # Text Reset

# Regular Colors
Black='\e[0;30m'        # Black
Red='\e[0;31m'          # Red
Green='\e[0;32m'        # Green
Yellow='\e[0;33m'       # Yellow
Blue='\e[0;34m'         # Blue
Purple='\e[0;35m'       # Purple
Cyan='\e[0;36m'         # Cyan
White='\e[0;37m'        # White

# Bold
BBlack='\e[1;30m'       # Black
BRed='\e[1;31m'         # Red
BGreen='\e[1;32m'       # Green
BYellow='\e[1;33m'      # Yellow
BBlue='\e[1;34m'        # Blue
BPurple='\e[1;35m'      # Purple
BCyan='\e[1;36m'        # Cyan
BWhite='\e[1;37m'       # White

# Underline
UBlack='\e[4;30m'       # Black
URed='\e[4;31m'         # Red
UGreen='\e[4;32m'       # Green
UYellow='\e[4;33m'      # Yellow
UBlue='\e[4;34m'        # Blue
UPurple='\e[4;35m'      # Purple
UCyan='\e[4;36m'        # Cyan
UWhite='\e[4;37m'       # White

# Background
On_Black='\e[40m'       # Black
On_Red='\e[41m'         # Red
On_Green='\e[42m'       # Green
On_Yellow='\e[43m'      # Yellow
On_Blue='\e[44m'        # Blue
On_Purple='\e[45m'      # Purple
On_Cyan='\e[46m'        # Cyan
On_White='\e[47m'       # White

# High Intensity
IBlack='\e[0;90m'       # Black
IRed='\e[0;91m'         # Red
IGreen='\e[0;92m'       # Green
IYellow='\e[0;93m'      # Yellow
IBlue='\e[0;94m'        # Blue
IPurple='\e[0;95m'      # Purple
ICyan='\e[0;96m'        # Cyan
IWhite='\e[0;97m'       # White

# Bold High Intensity
BIBlack='\e[1;90m'      # Black
BIRed='\e[1;91m'        # Red
BIGreen='\e[1;92m'      # Green
BIYellow='\e[1;93m'     # Yellow
BIBlue='\e[1;94m'       # Blue
BIPurple='\e[1;95m'     # Purple
BICyan='\e[1;96m'       # Cyan
BIWhite='\e[1;97m'      # White

# High Intensity backgrounds
On_IBlack='\e[0;100m'   # Black
On_IRed='\e[0;101m'     # Red
On_IGreen='\e[0;102m'   # Green
On_IYellow='\e[0;103m'  # Yellow
On_IBlue='\e[0;104m'    # Blue
On_IPurple='\e[0;105m'  # Purple
On_ICyan='\e[0;106m'    # Cyan
On_IWhite='\e[0;107m'   # White

To use in commands from your shell environment:

$ echo -e "${txtblu}test"
test
$ echo -e "${bldblu}test"
test
$ echo -e "${undblu}test"
test
$ echo -e "${bakblu}test"
test
$ _
PS1="\[$txtblu\]foo\[$txtred\] bar\[$txtrst\] baz : "

Double quotes enable $color variable expansion and the \[ \] escapes around them make them not count as character positions and the cursor position is not wrong.

Note: If experiencing premature line wrapping when entering commands, then missing escapes (\[ \]) is most likely the reason.

Prompt escapes

The various Bash prompt escapes listed in the manpage:

Bash allows these prompt strings to be customized by inserting a
number of backslash-escaped special characters that are
decoded as follows:

	\a		an ASCII bell character (07)
	\d		the date in "Weekday Month Date" format (e.g., "Tue May 26")
	\D{format}	the format is passed to strftime(3) and the result
			  is inserted into the prompt string an empty format
			  results in a locale-specific time representation.
			  The braces are required
	\e		an ASCII escape character (033)
	\h		the hostname up to the first `.'
	\H		the hostname
	\j		the number of jobs currently managed by the shell
	\l		the basename of the shell's terminal device name
	\n		newline
	\r		carriage return
	\s		the name of the shell, the basename of $0 (the portion following
			  the final slash)
	\t		the current time in 24-hour HH:MM:SS format
	\T		the current time in 12-hour HH:MM:SS format
	\@		the current time in 12-hour am/pm format
	\A		the current time in 24-hour HH:MM format
	\u		the username of the current user
	\v		the version of bash (e.g., 2.00)
	\V		the release of bash, version + patch level (e.g., 2.00.0)
	\w		the current working directory, with $HOME abbreviated with a tilde
	\W		the basename of the current working directory, with $HOME
			 abbreviated with a tilde
	\!		the history number of this command
	\#		the command number of this command
	\$		if the effective UID is 0, a #, otherwise a $
	\nnn		the character corresponding to the octal number nnn
	\\		a backslash
	\[		begin a sequence of non-printing characters, which could be used
			  to embed a terminal control sequence into the prompt
	\]		end a sequence of non-printing characters

	The command number and the history number are usually different:
	the history number of a command is its position in the history
	list, which may include commands restored from the history file
	(see HISTORY below), while the command number is the position in
	the sequence of commands executed during the current shell session.
	After the string is decoded, it is expanded via parameter
	expansion, command substitution, arithmetic expansion, and quote
	removal, subject to the value of the promptvars shell option (see
	the description of the shopt command under SHELL BUILTIN COMMANDS
	below).

Positioning the cursor

The following sequence sets the cursor position:

\[\033[<row>;<column>f\]

The current cursor position can be saved using:

\[\033[s\]

To restore a position, use the following sequence:

\[\033[u\]

Tango-inaccurate.pngThe factual accuracy of this article or section is disputed.Tango-inaccurate.png

Reason: Does't work. Seems to have a problem in \[\033[1;\$((COLUMNS-4))f\]. (Discuss in Talk:Bash/Prompt customization#)

The following example uses these sequences to display the time in the upper right corner:

PS1=">\[\033[s\]\[\033[1;\$((COLUMNS-4))f\]\$(date +%H:%M)\[\033[u\]"

The environment variable COLUMNS contains the number of columns of the terminal. The above example substracts 4 from its value in order to justify the five character wide output of date at the right border.

Return value visualisation

Use the following prompt to see the return value of last command:

0 ;) : true
0 ;) : false
1 ;( :
#return value visualisation
PS1="\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[0;32m\];)\"; else echo \"\[\033[0;31m\];(\"; fi)\[\033[00m\] : "

Zero is a green smiley and non-zero a red one. So your prompt will smile if the last operation was successful.

But you will probably want to include the username and hostname as well, like this:

0 ;) andy@alba ~ $ true
0 ;) andy@alba ~ $ false
1 ;( andy@alba ~ $ _
#return value visualisation
PS1="\[\033[01;37m\]\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\];)\"; else echo \"\[\033[01;31m\];(\"; fi) $(if [[ ${EUID} == 0 ]]; then echo '\[\033[01;31m\]\h'; else echo '\[\033[01;32m\]\u@\h'; fi)\[\033[01;34m\] \w \$\[\033[00m\] "

Or, if you want, you can build your prompt using the unicode symbol for a zero status and the unicode symbol for a nonzero status:

0 ✓ andy@alba ~ $ true
0 ✓ andy@alba ~ $ false
1 andy@alba ~ $ I\ will\ try\ to\ type\ a\ wrong\ command...
bash: I will try to type a wrong command...: command not found
127 andy@alba ~ $ _
#return value visualisation
PS1="\[\033[01;37m\]\$? \$(if [[ \$? == 0 ]]; then echo \"\[\033[01;32m\]\342\234\223\"; else echo \"\[\033[01;31m\]\342\234\227\"; fi) $(if [[ ${EUID} == 0 ]]; then echo '\[\033[01;31m\]\h'; else echo '\[\033[01;32m\]\u@\h'; fi)\[\033[01;34m\] \w \$\[\033[00m\] "

Alternatively, this can be made more readable with PROMPT_COMMAND:

set_prompt () {
    Last_Command=$? # Must come first!
    Blue='\[\e[01;34m\]'
    White='\[\e[01;37m\]'
    Red='\[\e[01;31m\]'
    Green='\[\e[01;32m\]'
    Reset='\[\e[00m\]'
    FancyX='\342\234\227'
    Checkmark='\342\234\223'

    # Add a bright white exit status for the last command
    PS1="$White\$? "
    # If it was successful, print a green check mark. Otherwise, print
    # a red X.
    if [[ $Last_Command == 0 ]]; then
        PS1+="$Green$Checkmark "
    else
        PS1+="$Red$FancyX "
    fi
    # If root, just print the host in red. Otherwise, print the current user
    # and host in green.
    if [[ $EUID == 0 ]]; then
        PS1+="$Red\\h "
    else
        PS1+="$Green\\u@\\h "
    fi
    # Print the working directory and prompt marker in blue, and reset
    # the text color to the default.
    PS1+="$Blue\\w \\\$$Reset "
}
PROMPT_COMMAND='set_prompt'

Here's an alternative that only includes the error status, if non-zero:

PROMPT_COMMAND='es=$?; [[ $es -eq 0 ]] && unset error || error=$(echo -e "\e[1;41m $es \e[40m")'
PS1="${error} ${PS1}"

Tips and tricks

Different colors for text entry and console output

If you do not reset the text color at the end of your prompt, both the text you enter and the console text will simply stay in that color. If you want to edit text in a special color but still use the default color for command output, you will need to reset the color after you press Enter, but still before any commands get run. You can do this by installing a DEBUG trap, like this:

~/.bashrc
trap 'echo -ne "\e[0m"' DEBUG

Laptop battery status on prompt

See this article and this post for details.

Random quotations at logon

If you want a random quotation at logon (like Slackware) you must install fortune-mod:

~/.bashrc
# fortune is a simple program that displays a pseudorandom message
# from a database of quotations at logon and/or logout.

[[ "$PS1" ]] && /usr/bin/fortune
#[[ "$PS1" ]] && echo -e "\e[00;33m$(/usr/bin/fortune)\e[00m"  # Color: Brown

Colorized Arch latest news at logon

To read 10 latest news items from the Arch official website, user grufo has written a small and coloured RSS escaping script (scrollable):

   :: Arch Linux: Recent news updates ::
 [ https://www.archlinux.org/news/ ]

The latest and greatest news from the Arch Linux distribution.

 en-us Sun, 04 Nov 2012 16:09:46 +0000


   :: End of initscripts support ::
 [ https://www.archlinux.org/news/end-of-initscripts-support/ ]


Tom Gundersen wrote:
As systemd is now the default init system, Arch Linux is receiving minimal testing on initscripts systems. Due to a lack of resources and interest, we are unlikely to work on fixing initscripts-specific bugs, and may close them as WONTFIX.
We therefore strongly encourage all users to migrate to systemd as soon as possible. See the systemd migration guide [ https://wiki.archlinux.org/index.php/Systemd ].
To ease the transition, initscripts support will remain in the official repositories for the time being, unless otherwise stated. As of January 2013, we will start removing initscripts support (e.g., rc scripts) from individual packages without further notice.

 Tom Gundersen Sun, 04 Nov 2012 16:09:46 +0000 tag:www.archlinux.org,2012-11-04:/news/end-of-initscripts-support/


   :: November release of install media available ::
 [ https://www.archlinux.org/news/november-release-of-install-media-available/ ]


Pierre Schmitz wrote:
The latest snapshot of our install and rescue media can be found on our Download [ https://www.archlinux.org/download/ ] page. The 2012.11.01 ISO image mainly contains minor bug fixes, cleanups and new packages compared to the previous one:
 * First media with Linux 3.6
 * copytoram=n can be used to not copy the image to RAM on network boot. This is probably unreliable but an option for systems with very low memory.
 * cowfile_size boot parameter mainly for persistent COW on VFAT. See the README [ https://projects.archlinux.org/archiso.git/plain/docs/README.bootparams?id=v4 ] file for details.

 Pierre Schmitz Fri, 02 Nov 2012 17:54:15 +0000 tag:www.archlinux.org,2012-11-02:/news/november-release-of-install-media-available/


   :: Bug Squashing Day: Saturday 17th November ::
 [ https://www.archlinux.org/news/bug-squashing-day-saturday-17th-november/ ]


Allan McRae wrote:
The number of bugs in the Arch Linux bug tracker is creeping up so it is time for some extermination.
This is a great way for the community to get involved and help the Arch Linux team. The process is simple. First look at a bug for your favorite piece of software in the bug tracker and check if it still occurs. If it does, check the upstream project for a fix and test it to confirm it works. If there is no fix available, make sure the bug has been filed in the upstream tracker.
Join us on the #archlinux-bugs IRC channel. We are spread across timezones, so people should be around all day.

 Allan McRae Thu, 01 Nov 2012 12:28:51 +0000 tag:www.archlinux.org,2012-11-01:/news/bug-squashing-day-saturday-17th-november/


   :: ConsoleKit replaced by logind ::
 [ https://www.archlinux.org/news/consolekit-replaced-by-logind/ ]


Allan McRae wrote:
With GNOME 3.6, polkit and networkmanager moving to [extra], ConsoleKit has now been removed from the repositories. Any package that previously depended on it now relies on systemd-logind instead. That means that the system must be booted with systemd to be fully functional.
In addition to GNOME, both KDE and XFCE are also affected by this change.

 Allan McRae Tue, 30 Oct 2012 22:17:39 +0000 tag:www.archlinux.org,2012-10-30:/news/consolekit-replaced-by-logind/


   :: systemd is now the default on new installations ::
 [ https://www.archlinux.org/news/systemd-is-now-the-default-on-new-installations/ ]


Thomas Bächler wrote:
The base group now contains the systemd-sysvcompat package. This means that all new installations will boot with systemd by default.
As some packages still lack native systemd units, users can install the initscripts package and use the DAEMONS array in /etc/rc.conf to start services using the legacy rc.d scripts.
This change does not affect existing installations. For the time being, the initscripts and sysvinit packages remain available from our repositories. However, individual packages may now start relying on the system being booted with systemd.
Please refer to the wiki [ https://wiki.archlinux.org/index.php/Systemd ] for how to transition an existing installation to systemd.

 Thomas Bächler Sat, 13 Oct 2012 09:29:38 +0000 tag:www.archlinux.org,2012-10-13:/news/systemd-is-now-the-default-on-new-installations/


   :: Install medium 2012.10.06 introduces systemd ::
 [ https://www.archlinux.org/news/install-medium-20121006-introduces-systemd/ ]


Pierre Schmitz wrote:
The October release of the Arch Linux install medium is available for Download [ https://www.archlinux.org/download/ ] and can be used for new installs or as a rescue system. It contains a set of updated packages and the following notable changes:
 * systemd is used to boot up the live system.
 * initscripts are no longer available on the live system but are still installed by default on the target system. This is likely to change in the near future.
 * EFI boot and setup has been simplified.
 * gummiboot is used to display a menu on EFI systems.
 * The following new packages are available on the live system: ethtool, fsarchiver, gummiboot-efi, mc, partclone, partimage, refind-efi, rfkill, sudo, testdisk, wget, xl2tpd

 Pierre Schmitz Sun, 07 Oct 2012 16:58:03 +0000 tag:www.archlinux.org,2012-10-07:/news/install-medium-20121006-introduces-systemd/


   :: New install medium 2012.09.07 ::
 [ https://www.archlinux.org/news/new-install-medium-20120907/ ]


Pierre Schmitz wrote:
As is customary by now there is a new install medium available at the beginning of this month. The live system can be downloaded from Download [ https://www.archlinux.org/download/ ] and be used for new installs or as a rescue system.
In addition to a couple of updated packages and bug fixes the following changes stand out:
 * First medium with Linux 3.5 (3.5.3)
 * The script boot parameter works again (FS#31022 [ https://bugs.archlinux.org/task/31022 ])
 * When booting via PXE and NFS or NBD the ISO will be copied to RAM to ensure a more stable usage.
 * The live medium contains usb_modeswitch and wvdial which e.g. allows to establish a network connection using an UMTS USB dongle
 * Furthermore the newest versions of initscripts, systemd and netcfg are included.

 Pierre Schmitz Sat, 08 Sep 2012 09:48:52 +0000 tag:www.archlinux.org,2012-09-08:/news/new-install-medium-20120907/


   :: Fontconfig 2.10.1 update - manual intervention required ::
 [ https://www.archlinux.org/news/fontconfig-2101-update-manual-intervention-required/ ]


Andreas Radke wrote:
The fontconfig 2.10.1 update overwrites symlinks created by the former package version. These symlinks need to be removed before the update:

rm /etc/fonts/conf.d/20-unhint-small-vera.conf
rm /etc/fonts/conf.d/20-fix-globaladvance.conf
rm /etc/fonts/conf.d/29-replace-bitmap-fonts.conf
rm /etc/fonts/conf.d/30-metric-aliases.conf
rm /etc/fonts/conf.d/30-urw-aliases.conf
rm /etc/fonts/conf.d/40-nonlatin.conf
rm /etc/fonts/conf.d/45-latin.conf
rm /etc/fonts/conf.d/49-sansserif.conf
rm /etc/fonts/conf.d/50-user.conf
rm /etc/fonts/conf.d/51-local.conf
rm /etc/fonts/conf.d/60-latin.conf
rm /etc/fonts/conf.d/65-fonts-persian.conf
rm /etc/fonts/conf.d/65-nonlatin.conf
rm /etc/fonts/conf.d/69-unifont.conf
rm /etc/fonts/conf.d/80-delicious.conf
rm /etc/fonts/conf.d/90-synthetic.conf
pacman -Syu fontconfig

Main systemwide configuration should be done by symlinks (especially for autohinting, sub-pixel and lcdfilter):

cd /etc/fonts/conf.d
ln -s ../conf.avail/XX-foo.conf

Also check Font Configuration [ https://wiki.archlinux.org/index.php/Font_Configuration ] and Fonts [ https://wiki.archlinux.org/index.php/Fonts ].

 Andreas Radke Thu, 06 Sep 2012 13:54:23 +0000 tag:www.archlinux.org,2012-09-06:/news/fontconfig-2101-update-manual-intervention-required/


   :: netcfg-2.8.9 drops deprecated rc.conf compatibility ::
 [ https://www.archlinux.org/news/netcfg-289-drops-initscripts-compatibility/ ]


Florian Pritz wrote:
Users of netcfg should configure all interfaces in /etc/conf.d/netcfg rather than /etc/rc.conf.

 Florian Pritz Sat, 11 Aug 2012 20:00:02 +0000 tag:www.archlinux.org,2012-08-11:/news/netcfg-289-drops-initscripts-compatibility/


   :: Install media 2012.08.04 available ::
 [ https://www.archlinux.org/news/install-media-20120804-available/ ]


Pierre Schmitz wrote:
The August snapshot of our live and install media comes with updated packages and the following changes on top of the previous ISO image [ /news/install-media-20120715-released/ ]:
 * GRUB 2.0 instead of the legacy 0.9 version is available.
 * The Installation Guide [ https://wiki.archlinux.org/index.php/Installation_Guide ] can be found at /root/install.txt.
 * ZSH with Grml's configuration [ http://grml.org/zsh/ ] is used as interactive shell to provide a user friendly and more convenient environment. This includes completion support for pacstrap, arch-chroot, pacman and most other tools.
 * The network daemon is started by default which will automatically setup your network if DHCP is available.
Note that all these changes only affect the live system and not the base system you install using pacstrap. The ISO image can be downloaded from our download page [ /download/ ]. The next snapshot is scheduled for September.

 Pierre Schmitz Sat, 04 Aug 2012 17:24:30 +0000 tag:www.archlinux.org,2012-08-04:/news/install-media-20120804-available/


andy@alba _
~/.bashrc
# Arch latest news
if [ "$PS1" ]; then
	# The characters "£, §" are used as metacharacters. They should not be encountered in a feed...
	echo -e "$(echo $(curl --silent https://www.archlinux.org/feeds/news/ | sed -e ':a;N;$!ba;s/\n/ /g') | \
		sed -e 's/&amp;/\&/g
		s/&lt;\|&#60;/</g
		s/&gt;\|&#62;/>/g
		s/<\/a>/£/g
		s/href\=\"/§/g
		s/<title>/\\n\\n\\n   :: \\e[01;31m/g; s/<\/title>/\\e[00m ::\\n/g
		s/<link>/ [ \\e[01;36m/g; s/<\/link>/\\e[00m ]/g
		s/<description>/\\n\\n\\e[00;37m/g; s/<\/description>/\\e[00m\\n\\n/g
		s/<p\( [^>]*\)\?>\|<br\s*\/\?>/\n/g
		s/<b\( [^>]*\)\?>\|<strong\( [^>]*\)\?>/\\e[01;30m/g; s/<\/b>\|<\/strong>/\\e[00;37m/g
		s/<i\( [^>]*\)\?>\|<em\( [^>]*\)\?>/\\e[41;37m/g; s/<\/i>\|<\/em>/\\e[00;37m/g
		s/<u\( [^>]*\)\?>/\\e[4;37m/g; s/<\/u>/\\e[00;37m/g
		s/<code\( [^>]*\)\?>/\\e[00m/g; s/<\/code>/\\e[00;37m/g
		s/<a[^§|t]*§\([^\"]*\)\"[^>]*>\([^£]*\)[^£]*£/\\e[01;31m\2\\e[00;37m \\e[01;34m[\\e[00;37m \\e[04m\1\\e[00;37m\\e[01;34m ]\\e[00;37m/g
		s/<li\( [^>]*\)\?>/\n \\e[01;34m*\\e[00;37m /g
		s/<!\[CDATA\[\|\]\]>//g
		s/\|>\s*<//g
		s/ *<[^>]\+> */ /g
		s/[<>£§]//g')\n\n";
fi

To only get the absolute latest item, use this:

# Arch latest news
if [ "$PS1" ]; then
	# The characters "£, §" are used as metacharacters. They should not be encountered in a feed...
	echo -e "$(echo $(curl --silent https://www.archlinux.org/feeds/news/ | awk ' NR == 1 {while ($0 !~ /<\/item>/) {print;getline} sub(/<\/item>.*/,"</item>") ;print}' | sed -e ':a;N;$!ba;s/\n/ /g') | \
		sed -e 's/&amp;/\&/g
		s/&lt;\|&#60;/</g
		s/&gt;\|&#62;/>/g
		s/<\/a>/£/g
		s/href\=\"/§/g
		s/<title>/\\n\\n\\n   :: \\e[01;31m/g; s/<\/title>/\\e[00m ::\\n/g
		s/<link>/ [ \\e[01;36m/g; s/<\/link>/\\e[00m ]/g
		s/<description>/\\n\\n\\e[00;37m/g; s/<\/description>/\\e[00m\\n\\n/g
		s/<p\( [^>]*\)\?>\|<br\s*\/\?>/\n/g
		s/<b\( [^>]*\)\?>\|<strong\( [^>]*\)\?>/\\e[01;30m/g; s/<\/b>\|<\/strong>/\\e[00;37m/g
		s/<i\( [^>]*\)\?>\|<em\( [^>]*\)\?>/\\e[41;37m/g; s/<\/i>\|<\/em>/\\e[00;37m/g
		s/<u\( [^>]*\)\?>/\\e[4;37m/g; s/<\/u>/\\e[00;37m/g
		s/<code\( [^>]*\)\?>/\\e[00m/g; s/<\/code>/\\e[00;37m/g
		s/<a[^§|t]*§\([^\"]*\)\"[^>]*>\([^£]*\)[^£]*£/\\e[01;31m\2\\e[00;37m \\e[01;34m[\\e[00;37m \\e[04m\1\\e[00;37m\\e[01;34m ]\\e[00;37m/g
		s/<li\( [^>]*\)\?>/\n \\e[01;34m*\\e[00;37m /g
		s/<!\[CDATA\[\|\]\]>//g
		s/\|>\s*<//g
		s/ *<[^>]\+> */ /g
		s/[<>£§]//g')\n\n";
fi

Colors overview

The page at http://ascii-table.com/ansi-escape-sequences.php describes the various available color escapes. The following Bash function displays a table with ready-to-copy escape codes.

~/.bashrc
colors() {
	local fgc bgc vals seq0

	printf "Color escapes are %s\n" '\e[${value};...;${value}m'
	printf "Values 30..37 are \e[33mforeground colors\e[m\n"
	printf "Values 40..47 are \e[43mbackground colors\e[m\n"
	printf "Value  1 gives a  \e[1mbold-faced look\e[m\n\n"

	# foreground colors
	for fgc in {30..37}; do
		# background colors
		for bgc in {40..47}; do
			fgc=${fgc#37} # white
			bgc=${bgc#40} # black

			vals="${fgc:+$fgc;}${bgc}"
			vals=${vals%%;}

			seq0="${vals:+\e[${vals}m}"
			printf "  %-9s" "${seq0:-(default)}"
			printf " ${seq0}TEXT\e[m"
			printf " \e[${vals:+${vals+$vals;}}1mBOLD\e[m"
		done
		echo; echo
	done
}

See also

If you want to create a style all your own, you can take a look at these tips: