Editing Grep (section)

{{Short description|Unix command line utility for text search}}
{{lowercase title}}
{{Infobox software
| name = grep
| title = grep
| screenshot = Grep example.png<!-- Image name is enough -->
| caption = Example of grep command
| screenshot size = 300px
| screenshot alt = 
| collapsible = 
| author = [[Ken Thompson]]<ref name=history102>{{cite book|last=Kernighan|first=Brian|title=The Unix Programming Environment|year=1984|publisher=Prentice Hall|isbn=0-13-937681-X|pages=[https://archive.org/details/unixprogramminge0000kern/page/102 102]|url-access=registration|url=https://archive.org/details/unixprogramminge0000kern/page/102}}</ref><ref>[https://medium.com/@rualthanzauva/grep-was-a-private-command-of-mine-for-quite-a-while-before-i-made-it-public-ken-thompson-a40e24a5ef48 “grep was a private command of mine for quite a while before i made it public.” -Ken Thompson] {{webarchive|url=https://web.archive.org/web/20150526111054/https://medium.com/@rualthanzauva/grep-was-a-private-command-of-mine-for-quite-a-while-before-i-made-it-public-ken-thompson-a40e24a5ef48 |date=2015-05-26 }}, By Benjamin Rualthanzauva, Published on Feb 5, 2014, Medium</ref>
| developer = [[AT&T Bell Laboratories]]
| released = {{Start date and age|1973|11}}<ref name=history102 />
| programming language = [[C (programming language)|C]]
| operating system = [[Unix]], [[Unix-like]], [[Plan 9 from Bell Labs|Plan 9]], [[Inferno (operating system)|Inferno]], [[OS-9]], [[MSX-DOS]], [[IBM i]]
| platform = 
| genre = [[Command (computing)|Command]]
| license = 
| standard = 
| AsOf = 
}}
'''grep''' is a [[command line interface|command-line]] utility for searching plaintext datasets for lines that match a [[regular expression]]. Its name comes from the [[ed (text editor)|ed]] command <code>g/re/p</code> (global regular expression search and print), which has the same effect.<ref>Hauben et al. 1997, Ch. 9</ref><ref name="etymology">{{Cite web |url=http://www.catb.org/~esr/jargon/html/G/grep.html |title=grep |access-date=2006-06-29 |last=Raymond |first=Eric |author-link=Eric S. Raymond |work=Jargon File |url-status=dead |archive-url=https://web.archive.org/web/20060617052845/http://www.catb.org/~esr/jargon/html/G/grep.html |archive-date=2006-06-17 }}</ref> grep was originally developed for the [[Unix]] operating system, but later became available for all [[Unix-like]] systems and some others such as [[OS-9]].<ref>{{cite book|author=Paul S. Dayan|year=1992|title=The OS-9 Guru - 1 : The Facts|publisher=Galactic Industrial Limited|isbn=0-9519228-0-7}}</ref>