What are you trying to accomplish here? Have you read man page of sed ? 

     The sed utility is a stream editor that reads  one  or  more
     text  files,  makes editing changes according to a script of
     editing commands, and writes the results to standard output.

[download]

Since you are already using perl, why not just use perl to perform substitution (a lot of monks had already given out code) instead of *nix sed, then your code will be portable (across other OSes, like windows).

In reply to Re: Replace strings in text file by pwagyi
in thread Replace strings in text file by TonyNY

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