drieux writes:
>
> On Dec 9, 2003, at 10:09 PM, Pablo Cusnir wrote:
>
> > Is there a way using Perl to add to the environment
> > variable PATH a new path, and that addition will be
> > valid after the script is ran and not only for the script's scope.
> > I'm working in cshell in Solaris 5.8
>
> let me see IF I get your idea.
>
> I have a command say "add_path" so that
> you could do something like
>
> vladimir: 70:] echo $PATH
> /usr/local/bin:/usr/X/bin:/usr/bin
> vladimir: 71:] add_path
> vladimir: 72:] echo $PATH
> /happy/place/here:/usr/local/bin:/usr/X/bin:/usr/bin
> vladimir: 73:]
>
> that's not really going to happen, since you want to
> change the environment of the currently running process
> by having a sub-process 'signal it'...
I am not a c-shell guy, but in then Bourne shell, or in bash, you
could accomplish what you want in a similar fashion thus:
# instead of "add_path" being called directly, you can do this:
export PATH=`add_path`:$PATH
The back-quotes perform what lispers call a "splice macro". The value
that is returned on add_path's stdout replaces the text or `add_path`
so that it does what you want. So add_path might look something like
this:
#!/bin/bash
# add_path -- return a path to add to PATH
echo /some/unusual/path:/another/one:/and/so/forth
I know there is a similar construct in csh, but I do not remember what
it is.
I hope this is at least some help.
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