Yes. You can look up the "qr//" operator in perlre, (update: better yet, look it up in perlop), or you can simply assign a regex string to a variable, and use that variable in matches:

#!/usr/bin/perl

use strict;

my $testdata = 'This is a foo bar test';

while ( my $testregex = <DATA> ) {
    chomp $testregex;
    my $result = ( $testdata =~ /$testregex/ ) ? "matched" : "did not 
+match";

    print "Test data $result $testregex\n";
}

__DATA__
foo
o{1,2}
\w{5,10}
\w{1,5}
\d
bar
[download]

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