Locales are used in Linux to define which language the user uses. As the locales define the character sets being used as well, setting up the correct locale is especially important if the language contains non-ASCII characters.
Locale names are defined using the following format:
- 1 Enabling necessary locales
- 2 Setting the locale system-wide
- 3 Setting fallback locales
- 4 Setting per user locale
- 5 Setting collation
- 6 Setting the first day of the week
- 7 Troubleshooting
- 8 See also
Enabling necessary locales
Before a locale can be used on the system, it has to be enabled first. To list all available locales, use:
$ locale -a
To enable a locale, uncomment the name of the locale in the file
/etc/locale.gen. This file contains all the available locales that can be used on the system. Revert the process to disable a locale. After the necessary locales are enabled, the system needs to be updated with the new locales:
To display the locales currently in use, use:
US English example
First uncomment the following locales in
Then update the system as root:
Setting the locale system-wide
To define the system-wide locale used on the system, set
locale.conf contains a new-line separated list of environment variable assignments: besides
LANG, it supports all the
LC_* variables, with the exception of
An advanced example configuration would be:
# Enable UTF-8 with Australian settings. LANG="en_AU.UTF-8" # Keep the default sort order (e.g. files starting with a '.' # should appear at the start of a directory listing.) LC_COLLATE="C" # Set the short date to YYYY-MM-DD (test with "date +%c") LC_TIME="en_DK.UTF-8"
You can set the default locale in
locale.conf also using
localectl, for example:
# localectl set-locale LANG="de_DE.UTF-8"
man 1 localectl and
man 5 locale.conf for details.
They will take effect after rebooting the system and will be set for individual sessions at login.
Setting fallback locales
Programs which use gettext for translations respect the
LANGUAGE option in addition to the usual variables. This allows users to specify a list of locales that will be used in that order. If a translation for the preferred locale is unavailable, another from a similar locale will be used instead of the default. For example, an Australian user might want to fall back to British rather than US spelling:
Setting per user locale
As we mentioned earlier, some users might want to define a different locale than the system-wide locale.
/etc/profile.d/locale.sh overrides the system-wide locale with the one found in
~/.config/locale.conf. This file does not exist by default.
Collation, or sorting, is a little different. Sorting is a goofy beast and different locales do things differently. To get around potential issues, Arch used to set
/etc/profile. However, this method is now deprecated. To enable this behavior, simply add the following to
ls command will sort dotfiles first, followed by uppercase and lowercase filenames. Note that without a
LC_COLLATE setting, locale aware apps sort by
LC_COLLATE settings will be overridden if
LC_ALL is set. If this is a problem, ensure that
LC_ALL is not set by adding the following to
LC_ALL is the only
LC_* variable, which cannot be set in
Setting the first day of the week
In many countries the first day of the week is Monday. To adjust this, change or add the following lines in
LC_TIME ... week 7;19971130;5 first_weekday 2 first_workday 2
And then update the system:
My terminal doesn't support UTF-8
Unfortunately some terminals do not support UTF-8. In this case, you have to use a different terminal. Here are some terminals that have support for UTF-8:
Xterm doesn't support UTF-8
only supports UTF-8, if ran as
Gnome-terminal or rxvt-unicode doesn't support UTF-8
You need to launch these applications from a UTF-8 locale or they will drop UTF-8 support. Enable the
en_US.UTF-8 locale (or your local UTF-8 alternative) per the instructions above and set it as the default locale, then reboot.
Changed everything and my GNOME is still using wrong language?
Some GUI tools use
~/.pam_environment as a place where environment variables are defined. GNOME reads this file.