In general, this will do it: 

perl -i.bak -pe 's/before/after/' filename

[download]
This changes your file in place, and puts a back up in filename.bak. The only thing left is specifying the s/// expression, but from your post I can't figure out exactly what you want. So, exactly, what should the lines to be replaced look like, and what should the replacement look like?

the lowliest monk

In reply to Re: replace a line when regex match... by tlm
in thread replace a line when regex match... by perlknight

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