You can set $ENV{var} in your process and then call the rest of the scripts with fork+exec.
For example:

Parent (your script): 

#!/usr/local/bin/perl
use strict;
use warnings;

$ENV{foo}="bar";

if (fork == 0){ #child
        exec("./foo.pl");
} else{
        print "I'm the parent $ENV{foo}\n";
}

[download]

Child (other scripts): 

#!/usr/local/bin/perl

print "I'm the child $ENV{foo}\n";

[download]

This works because environment is propagated to childs (and filehandles and...).

Search for fork+exec for more information.

In reply to Re: create environment variable at run time by deibyz
in thread create environment variable at run time by sachin_chat

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