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28 lines
890 B
Markdown
28 lines
890 B
Markdown
# egrep
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> Find patterns in files using extended `regex` (supports `?`, `+`, `{}`, `()`, and `|`).
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> More information: <https://manned.org/egrep>.
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- Search for a pattern within a file:
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`egrep "{{search_pattern}}" {{path/to/file}}`
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- Search for a pattern within multiple files:
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`egrep "{{search_pattern}}" {{path/to/file1 path/to/file2 ...}}`
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- Search `stdin` for a pattern:
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`cat {{path/to/file}} | egrep {{search_pattern}}`
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- Print file name and line number for each match:
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`egrep {{[-H|--with-filename]}} {{[-n|--line-number]}} "{{search_pattern}}" {{path/to/file}}`
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- Search for a pattern in all files recursively in a directory, ignoring binary files:
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`egrep {{[-r|--recursive]}} --binary-files={{without-match}} "{{search_pattern}}" {{path/to/directory}}`
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- Search for lines that do not match a pattern:
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`egrep {{[-v|--invert-match]}} "{{search_pattern}}" {{path/to/file}}`
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