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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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[james28909]: im not quite how to explain it any better nick. you evolved from ignorance to intelligence. not the other way. the universe evolves from gas coulds and debris into planets stars and galaxies ect. it doesnt happen any other way. hence it has ....
[james28909]: some kind of logic behind it
[james28909]: and that is also anothe rpoint i made, i think it has to do with perception of the world around you. most people think of evolution on a human scale. why could life evolve on this planet? because this planet evolved in this solar system. and so on.
[holli]: here's something for you to watch, James. I think you will like it
[erix]: for the record: I have not downvoted anyone on that subthread that was my fault
[james28909]: there are all kinds of things that had to happen to let life come to be. but at the same time, life may not be the end goal IF there is any kind of end goal lol
[james28909]: well who is the person who gets to decide which behaviour is worthy of a downvote? a person with their own beliefs? xD
[erix]: teleology -- I've never understood why that was thunk up
[erix]: ( and when teleology was brought up, during my biology-study., I couldn't get an answer either )
[1nickt]: FTR I agree with you about "design." Just not sure about the trajectory of evolution. THere are a lot of dead-ends in the evolutionary paths. I suspect homo sapiens is just one of them.

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