Thanks for the help - but It still isnt working...I have included print statements for debugging: 

#!/usr/bin/perl -w
use strict;
open(my $excludes,"<",$ARGV[0]) or die("could not open $ARGV[0]!");
open(my $large,"<",$ARGV[1]) or die("could not open the $ARGV[1]!");

my @excludes = <$excludes>;
chomp(@excludes);
my %stopwords = map { $_ => } <@excludes>;

while( <$large> ){
        my ($test,@temp) = split(/\s+/,$_);
        print "testing: $test\n";
        print $stopwords{$test} , "\n";
        #print $test, "\n";
}


close($excludes);
close($large);

[download]
I get this message for each line of $large: 
testing: 9999853
Use of uninitialized value in print at ./filter_exclusions.pl line 13,
+ <$large> line 1.

[download]
Is it something Im missing with my input files?

In reply to Re^2: filter a file using an exclusion list by coldy
in thread filter a file using an exclusion list by coldy

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