[geeks] bash string matching

[Jochen Kunz]

On Wed, 4 Jun 2008 18:44:30 -0400
Shannon Hendrix <shannon at widomaker.com> wrote:

Most likely this will not help solving the question, but...

> Some posix shells like bash
bash has several extensions over POSIX.
"[[ expression ]]" is such an extension.

You have to avoid such extensions if you want to write true POSIX
compliant shell scripts. If you don't, your scripts will be bash
scripts, not shell scripts. (shell scripts in the sense of script that
can executed by any POSIX /bin/sh.)

I have seen to many "shell scripts" written by Linux weenies that start
with "#!/bin/sh" but are actually bash scripts...

A bourne shell, that limits it self mostly to the POSIX spec, is
the /bin/sh of NetBSD. It is available on Linux as "ash" or as part of
busybox.
-- 


tsch__,
       Jochen

Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/