Difference between revisions of "Dash as /bin/sh"

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[[Category:Arch development (English)]]
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#REDIRECT [[Dash]]
{{stub}}
 
{{expansion}}
 
 
 
This article is for those who want to help [[dash]] become the new {{filename|/bin/sh}}.
 
 
 
From http://article.gmane.org/gmane.linux.arch.devel/11418:
 
*http://mailman.archlinux.org/pipermail/arch-dev-public/2007-November/003053.html
 
*https://launchpad.net/ubuntu/+spec/dash-as-bin-sh
 
*https://wiki.ubuntu.com/DashAsBinSh
 
*All install scripts must be sh-compatible (or we need a way of executing non-sh scripts, there is a bug open for that)
 
*Any daemon/init script is probably written for /bin/bash as our rc.conf and other initscripts files use bash arrays, so those need to be pointed correctly
 
 
 
==Identifying bashisms==
 
 
 
Install {{package AUR|checkbashisms}} with an [[AUR helper]].
 
 
 
===Common places to check===
 
 
 
*Installed scripts with a {{codeline|#!/bin/sh}} shebang:
 
$ find {,/usr}/bin -type f \
 
    -exec grep -q -- '^#!/bin/sh' {} \; \
 
    -exec checkbashisms -f -p {} +
 
 
 
*Package install scripts:
 
$ find /var/lib/pacman/local -mindepth 2 -type f -name install \
 
    -exec checkbashisms -f -p {} + 2>&1 |\
 
    grep -v -e '^you may get strange results' \
 
            -e 'does not appear to have a #! interpreter line;$'
 
 
 
*Initscripts and daemons:
 
$ find \
 
    /etc/rc.{conf,d,local{,.shutdown},multi,shutdown,single,sysinit} -type -f \
 
    -exec checkbashisms -f -p {} + 2>&1 |\
 
    grep -v -e '^you may get strange results' \
 
            -e 'does not appear to have a #! interpreter line;$'
 
 
 
==Initscript status==
 
 
 
* The FD checks with {{codeline|test -t}} in {{filename|/etc/rc.d/functions}} do not work correctly with dash, breaking colored output as a result. See http://bugs.archlinux.org/task/19551?project=1&order=id&sort=desc (the patch does not address this issue in particular).
 
:* Try using {{codeline|test(1)}} instead of the dash builtin?
 
:* Is the problem specific to calls involving {{codeline|init(1)}}?
 

Latest revision as of 17:03, 24 October 2013

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