Difference between revisions of "Grep"
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| − | '''grep''' ('''G'''lobal '''R'''egular '''E'''xpression '''P'''rint) is a [[:Category:Linux Command Line Tools|command line utility]] that for a given a list of files or standard input to read, grep searches for lines of text that match one or many regular expressions, and outputs only the matching lines. | + | '''grep''' ('''G'''lobal '''R'''egular '''E'''xpression '''P'''rint; g/re/p; global / regular expression / print) is a [[:Category:Linux Command Line Tools|command line utility]] that for a given a list of files or standard input to read, grep searches for lines of text that match one or many regular expressions, and outputs only the matching lines. |
==See also== | ==See also== | ||
| − | *agrep — ''approximate grep'' to facilitate [[wikipedia:fuzzy string searching|fuzzy string searching]] | + | *[http://www.tgries.de/agrep/ agrep] — ''approximate grep'' to facilitate [[wikipedia:fuzzy string searching|fuzzy string searching]] |
| − | *fgrep — fixed pattern searches | + | *[http://www.gnu.org/software/grep/ fgrep] — fixed pattern searches |
| − | *egrep — for searches involving more sophisticated regular expression syntax | + | *[http://www.gnu.org/software/grep/ egrep] — for searches involving more sophisticated regular expression syntax |
| − | *ngrep — ''network grep'' | + | *[http://ngrep.sourceforge.net/ ngrep] — ''network grep'' |
| − | *rgrep — ''recursive grep'' | + | *[http://www.jedsoft.org/jed/ rgrep] — ''recursive grep'' |
| − | *pgrep — displays the processes whose names match a regular expression | + | *[[wikipedia:pgrep|pgrep]] — displays the processes whose names match a regular expression |
| − | *ugrep & | + | *[http://robur.slu.se/jensl/ugrep/ ugrep] — only do basic regexp string matching |
| − | *tcgrep — rewrite of grep which uses [[Perl]] [[regular expression]] syntax | + | *[http://search.cpan.org/src/CWEST/ppt-0.14/html/commands/grep/tcgrep.html tcgrep] — rewrite of grep which uses [[Perl]] [[regular expression]] syntax |
| − | *apachegrep — a Perl program to help webmasters go through their [[apache]] logs | + | *[http://apachegrep.sourceforge.net/ apachegrep] — a Perl program to help webmasters go through their [[apache]] logs |
| − | *rexgrep — GUI frontend to grep | + | *[http://rexgrep.tripod.com/rexgrep.htm rexgrep] — GUI frontend to grep |
| − | *webgrep — a set of 7 search utilities for web-masters | + | *[http://www.linuxfocus.org/~guido/ webgrep] — a set of 7 search utilities for web-masters |
| + | ===Other=== | ||
| + | *[http://www.cs.helsinki.fi/u/jjaakkol/sgrep.html Structure grep (sgrep)] | ||
| + | *[http://www.dcc.uchile.cl/%7Egnavarro/software/ Nondeterministic reverse grep (NR-grep)] | ||
| + | *[http://www.grouse.com.au/ggrep/ Grouse Grep (ggrep)] | ||
| + | *[http://www.vdesmedt.com/%7Evds2212/grep.html Python Grep (pygrep)] | ||
| + | *[http://www.ff.iij4u.or.jp/%7Enrt/lv/ Multilingual Grep (lv)] | ||
==External links== | ==External links== | ||
| − | *[http://www.gnu.org/software/grep/ GNU grep] | + | *[http://www.gnu.org/software/grep/ GNU grep] — the grep that usually comes with Linux distributions |
*[http://unixhelp.ed.ac.uk/CGI/man-cgi?grep GNU grep] man page | *[http://unixhelp.ed.ac.uk/CGI/man-cgi?grep GNU grep] man page | ||
*[http://www.linfo.org/grep.html The grep Command] - by The Linux Information Project (LINFO) | *[http://www.linfo.org/grep.html The grep Command] - by The Linux Information Project (LINFO) | ||
Latest revision as of 08:45, 17 October 2017
grep (Global Regular Expression Print; g/re/p; global / regular expression / print) is a command line utility that for a given a list of files or standard input to read, grep searches for lines of text that match one or many regular expressions, and outputs only the matching lines.
See also
- agrep — approximate grep to facilitate fuzzy string searching
- fgrep — fixed pattern searches
- egrep — for searches involving more sophisticated regular expression syntax
- ngrep — network grep
- rgrep — recursive grep
- pgrep — displays the processes whose names match a regular expression
- ugrep — only do basic regexp string matching
- tcgrep — rewrite of grep which uses Perl regular expression syntax
- apachegrep — a Perl program to help webmasters go through their apache logs
- rexgrep — GUI frontend to grep
- webgrep — a set of 7 search utilities for web-masters
Other
- Structure grep (sgrep)
- Nondeterministic reverse grep (NR-grep)
- Grouse Grep (ggrep)
- Python Grep (pygrep)
- Multilingual Grep (lv)
External links
- GNU grep — the grep that usually comes with Linux distributions
- GNU grep man page
- The grep Command - by The Linux Information Project (LINFO)
- "The Treacherous Optimization" — article on tradeoffs in grep to favor best-case over worst-case scenarios
- Egrep for linguists — an introduction to egrep.
- Tony Abou-Assaleh's list of Greps
- TCGrep
