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Re: PATH editing in a script

X-seq: zsh-users 1337
From: Bruce Stephens <B.Stephens@xxxxxxxxx>
To: zsh-users@xxxxxxxxxxxxxxx
Subject: Re: PATH editing in a script
Date: Tue, 24 Feb 1998 13:31:46 +0000
In-reply-to: Your message of "Tue, 24 Feb 1998 14:11:47 +0100." <jarausch-980224141145.A016422@numa1>

jarausch@xxxxxxxxxxxxxxxxxxx said:
> Having two versions of (say) TeX I would like to replace the PATH to
> tex in a user PATH environment string.

> Like s|/usr/local/lib/TeX|/usr/local/teTeX|

> It's no problem to edit the PATH e.g. by Perl but these changes have
> to persist whence the (Perl/Zsh) script finishes. 

You can't.  Environment variables are local to processes (and may get 
inherited by child processes, but that doesn't help here).

You can do something like (warning: untested code ahead):

PATH=$(echo $PATH | sed 's|/usr/local/lib/TeX|/usr/local/teTeX|')

You could stick this in a shell function (possibly autoloaded) or an alias.

References:
- PATH editing in a script
  - From: Helmut Jarausch

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