Since Unix is much more than an environment to run perl under, I'll offer another solution which may make more sense if all you're using perl for is deleting lines based on a regex. No point in dragging in a good, general purpose tool over a good, specific purpose tool when that's the purpose you need it for. ;-) 

  sed -e '/,,,,,/d' < source.txt > destination.txt

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There are a lot of good tools that come with unix. They can be worth the time to investigate - even if you don't use them, they can be invaluable guides in designing your own code to do something similar in perl.

In reply to Re^2: Delete line if REGEX == true by Tanktalus
in thread Delete line if REGEX == true by DrAxeman

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