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devdrops/instructions.md

Created October 18, 2016 15:49
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grep: limit char length
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instructions.md

grep: limit char length

From http://stackoverflow.com/a/10489580

  • Match the first 18 chars from a given string potato on file foo.txt

    egrep -Rso 'potato".{0,18}' foo.txt

  • Match the previous 10 and next 10 chars:

    egrep -Rso '.{0,10}potato".{0,10}' foo.txt
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