• regex

regex recipies and notes

• Negative regex matching

  • https://stackoverflow.com/questions/406230/regular-expression-to-match-a-line-that-doesnt-contain-a-word

• grep return only the section that match, using perl mode and lookback

  echo "123 foo YEA bar ok" > /tmp/test.txt
  $ grep -oP '(?<=foo )\w+(?= bar)' test.txt
  YEA

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