Difference between revisions of "Grep"

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* <code>[[findstr]]</code> ([[Windows]])
 
* <code>[[findstr]]</code> ([[Windows]])
 
* [[ggrep]] [[macOS]]
 
* [[ggrep]] [[macOS]]
* [[stdin]], [[stdout]], [[stderr]], 2>[[&1]]
+
* <code>[[stdin]], [[stdout]], [[stderr]], 2>[[&1]]</code>
 
* [[include (Cisco IOS)]]
 
* [[include (Cisco IOS)]]
 
* <code>[[awk]] '/TEXT_TO_SEARCH/{f=1}f' file</code>
 
* <code>[[awk]] '/TEXT_TO_SEARCH/{f=1}f' file</code>

Revision as of 10:06, 13 June 2024

grep[1] is a command for searching plain text data sets for lines that match a regular expression.


~/.bash_profile

alias grep='grep --color=auto'

Common options

-o, --only-matching
-a, --text equivalent to --binary-files=text
-i
-I Ignore binaries
-r
-v
-w
--exclude

Examples

Search for a pattern: TEXT="OTHER_TEXT"

Search for a pattern: TEXT="OTHER _TE XT" including spaces:

  • grep -o 'TEXT="[ a-zA-Z0-9_]*"' index.html

Search in hidden folders:

  • grep -ir your-search * .[^.]*

End of line:

  • grep your-search$

Add line:

  • grep -qxF 'your text "additional text"' yourfile.txt || echo 'your text "additional text"' >> yourfile.txt


Related

 [[:alpha:]]
 [[:alnum:]]
[[:digit:]]

See also

  • http://man7.org/linux/man-pages/man1/grep.1p.html
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