It's not homework is it?

No need to use a regex:

my @output = split(/\n/, `set`);
my %environment;
foreach (@output) {
    my ($key, $value)= split /=/;
    $environment{$key}=$value;
}
foreach $variable qw/USERNAME HOMEDRIVE/ {
    ${$variable}=$environment{$variable};
}
print "my name is $USERNAME
my home is at $HOMEDRIVE";

[download]
Output: 
my name is KJM
my home is at C:

[download]
I had to adapt the environment variables a bit as I'm on Windows XP.

Update: I should have used the %ENV-hash, but TIMTOWTDI!

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law

In reply to Re: printing enviroment vars from regex by CountZero
in thread printing enviroment vars from regex by RnC

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