Grep

grep
Original author(s)Ken Thompson[1][2]
Developer(s)AT&T Bell Laboratories
Initial releaseNovember 1973 (1973-11)[1]
Written inC
Operating systemUnix, Unix-like, Plan 9, Inferno, OS-9, MSX-DOS, IBM i
PlatformCross-platform
TypeCommand

grep is a command-line utility for searching plaintext datasets for lines that match a regular expression. Its name comes from the ed command g/re/p (global / regular expression search / and print), 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]

  1. ^ a b Kernighan, Brian (1984). The Unix Programming Environment. Prentice Hall. pp. 102. ISBN 0-13-937681-X.
  2. ^ “grep was a private command of mine for quite a while before i made it public.” -Ken Thompson Archived 2015-05-26 at the Wayback Machine, By Benjamin Rualthanzauva, Published on Feb 5, 2014, Medium
  3. ^ Hauben et al. 1997, Ch. 9
  4. ^ Raymond, Eric. "grep". Jargon File. Archived from the original on 2006-06-17. Retrieved 2006-06-29.
  5. ^ Paul S. Dayan (1992). The OS-9 Guru - 1 : The Facts. Galactic Industrial Limited. ISBN 0-9519228-0-7.

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