touch (command)
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, Digital Research/Novell DR DOS, the AROS shell, the Microware OS-9 shell, and ReactOS.
The command is also available for FreeDOS and Microsoft Windows.
Example of touch usage | |
| 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 |
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