If you want a program constantly running, see File::Tail. Otherwise, you'll need to record the size in some persistent storage, and then note if the file is now longer than that size on your next invocation.

-- Randal L. Schwartz, Perl hacker

In reply to Re: checking file everytime a new line is added to file by merlyn
in thread checking file everytime a new line is added to file by Anonymous Monk

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