Original author(s) | AT&T Bell Laboratories |
---|---|
Developer(s) | Paul Rubin, Arnold Robbins, Jim Kingdon, David MacKenzie, Randy Smith, TSC, Microware, Apple, Digital Research, Novell, Kris Heidenstrom |
Initial release | January 1979 |
Written in | C |
Operating system | Unix, Unix-like, Plan 9, Inferno, FLEX, OS-9, Classic Mac OS, Windows, DR DOS, AROS, FreeDOS, ReactOS, KolibriOS, IBM i |
Platform | Cross-platform |
Type | Command |
License | coreutils: GPLv3+ FreeDOS: GPLv2 ReactOS: BSD-4-Clause BusyBox: GPL-2.0-only Toybox: 0BSD Plan 9: MIT License |
In computing, touch
is a command used to update the access date and/or modification date of a computer file or directory. It is included in Unix and Unix-like operating systems, TSC's FLEX,[1] Digital Research/Novell DR DOS, the AROS shell,[2] the Microware OS-9 shell,[3] and ReactOS.[4]
The command is also available for FreeDOS[5] and Microsoft Windows.[6]