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tldr/pages/common/grep.md
2016-01-28 00:12:10 +02:00

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grep

Matches patterns in input text. Supports simple patterns and regular expressions.

  • Search for an exact string:

grep {{something}} {{file_path}}

  • Search without case-sensitivity:

grep -i {{something}} {{file_path}}

  • Search recursively in current directory for an exact string:

grep -r {{something}} .

  • Use a regex:

grep -e {{^regex$}} {{file_path}}

  • See 3 lines of context:

grep -C 3 {{something}} {{file_path}}

  • Print the count of matches instead of the matching text:

grep -c {{something}} {{file_path}}

  • Print line number for each match:

grep -n {{something}} {{file_path}}

  • Use the standard input instead of a file:

cat {{file_path}} | grep {{something}}

  • Invert match for excluding specific strings:

grep -v {{something}}