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Program Environment Variables

Getting/ Setting program environment variables
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Related Subjects (Perl)

The name of the currently running program is discussed at Running Process Information - Getting information on running processes.

See also Program Configuration Data

Up to Execution

See also: Local Process Communication - Communication between processes running on the same system. Synchronization. File locking. Signals. FIFOs, pipes, et al

See also: Process Creation and Control covers child process control (like sending signals), renice, fork, et al

(There may be additional related subject pages listed here)


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I {changed directory, modified my environment} in a perl script. How come the change disappeared when I exited the script? How do I get my changes to be visible?

Perl FAQ

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Envy Shell-independent environment variable management {Artistic}

(Info at freshmeat)

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(PERL predefined variable) $ENV{expr} The hash %ENV contains your current environment. Setting a value in ENV changes the environment for child processes.

Env - On nearly all operating systems, every process runs in some environment. Your path (a.k.a. $PATH) and home directory, for instance, are almost always variables in that environment. You can access your environment (that is, you can find out the va

At PERL

Cwd - Three functions for determining the current working directory. One is fast but flaky, one is slow and safe, one is juuust right. The Cwd module is bundled with Perl.

At PERL

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