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Answer: How can I match a multi-line regexp?

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Q&A > regular expressions > How can I match a multi-line regexp? contributed by wesal

To overcome the limitation with the quick in-place edit not working on matching the first-line you can remove the -p and do it yourself like:
perl -i.bak -e 'undef $/; $_=<>; s/line1\nline1/new content/g; print' files ..

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