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perlman:lib:Env

by root (Scribe)
on Dec 23, 1999 at 00:49 UTC ( #1107=perlfunc: print w/ replies, xml ) Need Help??

lib:Env

See the current Perl documentation for lib:Env.

Here is our local, out-dated (pre-5.6) version:


Env - perl module that imports environment variables



    use Env;
    use Env qw(PATH HOME TERM);



Perl maintains environment variables in a pseudo-hash named %ENV. For when this access method is inconvenient, the Perl module Env allows environment variables to be treated as simple variables.

The Env::import() function ties environment variables with suitable names to global Perl variables with the same names. By default it does so with all existing environment variables (keys %ENV). If the import function receives arguments, it takes them to be a list of environment variables to tie; it's okay if they don't yet exist.

After an environment variable is tied, merely use it like a normal variable. You may access its value

    @path = split(/:/, $PATH);

or modify it

    $PATH .= ":.";

however you'd like. To remove a tied environment variable from the environment, assign it the undefined value

    undef $PATH;


AUTHOR

Chip Salzenberg <chip@fin.uucp>


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