Please see How do I change one line in a file/delete a line in a file/insert a line in the middle of a file/append to the beginning of a file?. Short answer you can't. Long answer, of course you can but it takes a teeny bit of work.

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perl -pe "s/\b;([mnst])/'\1/mg"

In reply to Re: Adding characters to the beginning of a file by belg4mit
in thread Adding characters to the beginning of a file by lady

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