I don't understand what you mean by "comparing each value of $col[0]"; it has one value. You can get rid of the loop altogether, as it does nothing.

Here's another problem:

open FILE, ">feckyou.txt" or die $!;

This will overwrite your file every time through the loop. You'll only ever get one entry. If you want an entry for each row, move this open outside of the outermost loop.

I don't entirely understand your problem (showing some sample data would help), but if you need to see if any of the values from column A are in column D anywhere, you need to loop through each row once, put the values from column A in a hash, then loop through each row again and check if the value for column D exists anywhere in the hash.

Does that make more sense?

Improve your skills with Modern Perl: the free book.

In reply to Re: new dilemma on the same song that remains... umm the same by chromatic
in thread new dilemma on the same song that remains... umm the same by trickyq

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