mirror of https://github.com/CrimsonTome/tldr.git
41 lines
901 B
Markdown
41 lines
901 B
Markdown
# grep
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> Matches patterns in input text.
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> Supports simple patterns and regular expressions.
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- Search for an exact string:
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`grep {{something}} {{file_path}}`
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- Search in case-insensitive mode:
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`grep -i {{something}} {{path/to/file}}`
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- Search recursively in current directory for an exact string:
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`grep -r {{something}} .`
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- Use a regular expression (`-E` for extended regex, supporting `?`, `+`, `{}`, `()` and `|`):
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`grep -e {{^regex$}} {{path/to/file}}`
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- Print 3 lines of context around each match:
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`grep -C 3 {{something}} {{path/to/file}}`
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- Print the count of matches instead of the matching text:
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`grep -c {{something}} {{path/to/file}}`
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- Print line number for each match:
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`grep -n {{something}} {{path/to/file}}`
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- Use the standard input instead of a file:
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`cat {{path/to/file}} | grep {{something}}`
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- Invert match for excluding specific strings:
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`grep -v {{something}}`
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