Hi monks, I have a list of identifiers in excludes.txt and a large file which contains the identifier in the first filed of the file (large.txt). I need to print only the lines of large.txt that do not contain an item in excludes.txt in the first field. I have tried the following code but it is not working for reasons unknown to me... 
#!/usr/bin/perl -w
use strict;
open(EXCLUDES,"<",$ARGV[0]) or die("could not open $ARGV[0]!");

my @excludes = <EXCLUDES>;
chomp(@excludes);
open(LARGE,"<",$ARGV[1]) or die("could not open the $ARGV[1]!");

foreach my $id (@excludes) {
        while (<LARGE>) {
                print if !/$id/;
        }
}


close(EXCLUDES);
close(LARGE);

[download]
_LARGE_

9999853    5615    4    148656321    
999986    5615    14    94873609    
9999883    5615    4    860669    
9999929    5615    4    73689618    
9999931    5615    4    31286083    
9999944    5615    4    148596445    
999995    5615    10    78405504    
9999963    5615    4    84291761    
9999966    5615    4    5978256    
9999979    5615    4    135953341

[download]
_EXCLUDES_

9999853
999986

[download]
The large file is tab delimited. Could somebody kindly point out my mistake/s? Additionally, the large file is quite large (~30Gb) so any suggestions for a more efficient way to implement this would be appreciated

In reply to filter a file using an exclusion list by coldy

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