Perl: the Markov chain saw | |
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Re^5: trouble with regular expressionsby ysth (Canon) |
on Nov 06, 2012 at 18:14 UTC ( [id://1002552]=note: print w/replies, xml ) | Need Help?? |
You can't do what you are trying to do with the file...unless you write out exactly the same number of characters as were there before. Usually instead you open a new file, write out all the lines (whether changed or unchanged) to it, then rename it to replace the existing file. For a quick script operating on only small files, you could use Tie::File to automate most of this for you.
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