Try reading the Perl Monks guide to the Monastery to see what we're all about.

C.

I'm not quite sure what you're asking. Example input and output and your script as it is at the moment are generally helpful to clarify the question.

I assume from your title and first part of your question that given a string you want to get any text after an equals sign, and that then you know how to put it in a file, or whatever you want to do with it. If so then this might help:

#!/usr/bin/perl -w

use strict;

my $string = "name = arrunich";

if ($string =~ m/= \s* (\S+)/x) {
    print "$1 \n";
}
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This uses a regular expression which looks for an = sign followed by zero or more spaces, followed by one or more non-spaces. If it finds it then it puts the non-spaces in $1.

You might find String matching and Regular Expressions useful.

Update: First paragraphs added