tldr/pages/common/egrep.md

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egrep

Find patterns in files using extended regular expression (supports ?, +, {}, () and |). More information: https://manned.org/egrep.

  • Search for a pattern within a file:

egrep "{{search_pattern}}" {{path/to/file}}

  • Search for a pattern within multiple files:

egrep "{{search_pattern}}" {{path/to/file1}} {{path/to/file2}} {{path/to/file3}}

  • Search stdin for a pattern:

cat {{path/to/file}} | egrep {{search_pattern}}

  • Print file name and line number for each match:

egrep --with-filename --line-number "{{search_pattern}}" {{path/to/file}}

  • Search for a pattern in all files recursively in a directory, ignoring binary files:

egrep --recursive --binary-files={{without-match}} "{{search_pattern}}" {{path/to/directory}}

  • Search for lines that do not match a pattern:

egrep --invert-match "{{search_pattern}}" {{path/to/file}}