I have a problem with hashes and trying to understand them, I have read the perldoc intersection and looked into the Perl Cookbook, and still do not understand how I should handle this problem.
I have a master file with part number and quantity in it. I also have a file that has the same information in it, part number and quantity. Both files are comma, delimited. What I am trying to do is read in the Master file, and then read in the second file. Compare the second file to the Master file and decrement the quantity in Master file. Then print out the results Example Master file: 1011-303, 3 1021-329, 2 1021-333, 1 1021-336, 1 1021-340, 2 1021-323, 1 1021-330, 1 1021-334, 1 1021-341, 2 Example Data file 1011-303, 2 1021-329, 2 1021-333, 1 1021-336, 2 1021-340, 1 1021-323, 1 1021-330, 1 1021-334, 1 1021-341, 1 2044-666, 1 Code follows .. You will see that I am missing the code in the foreach . if that is what I need to use <snip> $fname = $ARGV[0] || "scanned.file"; open(Master, "master.file") || die ("Could not open file $!"); my %master_file = <Master>; close(Master); open(DATA, $fname ) || die ("Could not open file $!"); my $count=0; # open my hash foreach $item ( $fname ) { # # subratract the information in HasH % master_file # } # print results open(NewMasterList,">>Results.file") || die ("Could not write file $!"); close (DATA); close (NewMasterList); exit; Any help would be greatly appreciated !!! TIA Larry Sandwick Sarreid, Ltd. Network/System Administrator phone: (252) 291-1414 x223 fax : (252) 237-1592