Unix command line utility for text search / From Wikipedia, the free encyclopedia

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grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. Its name comes from the ed command g/re/p (globally search for a regular expression and print matching lines), which has the same effect.[3][4] grep was originally developed for the Unix operating system, but later available for all Unix-like systems and some others such as OS-9.[5]

Quick facts: Original author(s), Developer(s), Initial rel...
Original author(s)Ken Thompson[1][2]
Developer(s)AT&T Bell Laboratories
Initial releaseNovember 1973; 49 years ago (1973-11)[1]
Written inC
Operating systemUnix, Unix-like, Plan 9, Inferno, OS-9, MSX-DOS, IBM i