grep is a command line utility that finds input lines that match the specified regular expression , and displays them if the output is not canceled with a special key. The name is an acronym of the English phrase “ search g lobally for lines matching them ” and “search for lines that match the regular expression and display them”.
| GNU grep | |
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| operating system | and |
| Interface languages | English and others |
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| condition | Active |
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| Site | gnu.org/software/grep/ |
It was originally created for the UNIX operating system .
There are modifications to grep: egrep (with extended regular expression processing), fgrep (which treats the characters $ * [] ^ | () \ literally), rgrep (with recursive search enabled). As stated in the man manual (up to translation), “ egrep is the same as grep -E. fgrep is the same as grep -F. rgrep is the same as grep -r ".
See also
- pgrep - grep by ps .
- sed is a text replacement.
Literature
- John Bambenek and Agnieszka Klus. grep. Pocket Reference. - O'Reilly Media , 2009. - 77 p. - ISBN 978-0-596-15360-1 .
- Fei Williams. grep Super search by command // LinuxFormat . - 2010, July. - № 7 (133) . - p . 46-47 .
- Tony Bradley. Ubuntu Linux, Day 19: Using 'man' and 'grep' // PCWorld . - Jun 19, 2011.
- Tim McIntire. UNIX tips and tricks for a new user, Part 3: Introducing filters and regular expressions -> Searching files with grep . 12 May 2006. - IBM developerWorks. The appeal date is August 22, 2013. Archived August 24, 2013.
Links
grep(1)is the man help page for GNU / Linux user commands (English) ;- grep (1) / manpages-ru - man help page in Russian translation;
- Documentation on gnu.org - full documentation on the official GNU website (English)
- GNU grep (German)