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Answer: How do I delete/modify one line from test file ?
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Q&A > files > How do I delete/modify one line from test file ? contributed by marcos

perl -ni.bak -e 'print unless /(b\|)*b/' filename

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This line edit in place (-n option) filename removing any line like b|b|b|b, and save the original filename as filename.bak (-i.bak option).
I'm not sure this is what you need, but I hope it helps
marcos

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