#!C:\strawberry-perl\perl\bin\perl.exe use warnings; $masterlist = "masterlist.txt"; $newlist = "newlist.txt"; open(MASTERLIST, $masterlist) || die("Could not open file!"); open(NEWLIST, $newlist) || die("Could not open file!"); @masterlist = ; @newlist = ; $i = 0; foreach $line (@masterlist) { #print "$line\n"; $masterlines[$i] = $line; $i++; } $i = 0; foreach $line (@newlist) { #print "$line\n"; $newlines[$i] = $line; $i++; } foreach $line (@newlines) { @dupes = grep(/$line/, @masterlines); print @dupes; } sleep();