Portability of shell scripts from other *nixes

Doug Poland doug at polands.org
Thu Jan 26 03:09:44 UTC 2012

On Jan 25, 2012, at 18:04 , Chuck Swiger wrote:

> On Jan 25, 2012, at 2:08 PM, Doug Poland wrote:
>> The issue I'm having is the shebang line of the scripts in OS X is
>> #!/bin/sh, and it turns out that is really an instance of bash, and
>> the code contains some bashisms.  On FreeBSD I have bash in
>> /usr/local/bin/bash.
>> Is there an "easy/best" way to have a single shebang that works on
>> both OS's?  I'd rather not change FreeBSD's bourne shell to bash with
>> any symlinking of /usr/local/bin/bash to /bin/sh.
> Try using something like:
>  #!/usr/bin/env bash
> (If the shell scripts are something written by Apple rather than by third-parties, please also consider filing a bug report.)
This gets me closer, but the scripts behave differently now on OS X.  For example, printf's don't output the same.  


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