Re: [vox-tech] Bash script to setup environment variables
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Re: [vox-tech] Bash script to setup environment variables
Hmm... can you think of any other ways?
I'm trying to run a script, not a C program. Also, I don't know about
Unix but under DOS putenv() doesn't affect the parent program that called
the C program (it affects only itself and the children.)
-Mark
On Thu, 27 Dec 2001, Henry House wrote:
> On Thu, Dec 27, 2001 at 11:12:35PM -0800, Mark K. Kim wrote:
> > Keywords: bash, script, environment variables
> >
> > I'm doing some cross-compilation work so I need to flip environment
> > variables on/off in a heartbeat. I tried to write a script, but scripts
> > run on sub-processes so the changes do not take effect on the parent
> > process. Is there a way, without having to type `source script` or `.
> > script`, to make environment variables changes take place on the running
> > process?
>
> Would putenv(3) work? To quote the manual:
>
> NAME
> putenv - change or add an environment variable
>
> SYNOPSIS
> #include <stdlib.h>
>
> int putenv(char *string);
>
> DESCRIPTION
> The putenv() function adds or changes the value of environment variables. The
> argument string is of the form name=value. If name does not already exist in the
> environment, then string is added to the environment. If name does exist, then the
> value of name in the environment is changed to value. The string pointed to by
> string becomes part of the environment, so altering the string changes the environ
> ment.
>
> --
> Henry House
> The attached file is a digital signature. See <http://romana.hajhouse.org/pgp>
> for information. My OpenPGP key: <http://romana.hajhouse.org/hajhouse.asc>.
>
--
Mark K. Kim
http://www.cbreak.org/mark/
PGP key available upon request.
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