Pancakes Toucher Mac OS
Full MySQL Support
Sequel Pro is a fast, easy-to-use Mac database management application for working with MySQL databases.
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Pancakes Toucher Mac Os 11
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Easy Installation
Pancakes Toucher Mac Os Catalina
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| 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; 42 years ago |
| 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 |
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-likeoperating systems, TSC's FLEX,[1]Digital Research/NovellDR DOS, the AROS shell,[2] the MicrowareOS-9 shell,[3] and ReactOS.[4]The command is also available for FreeDOS[5] and Microsoft Windows.[6]
Overview[edit]
In its default usage, it is the equivalent of creating or opening a file and saving it without any change to the file contents. touch avoids opening, saving, and closing the file. Instead it simply updates the dates associated with the file or directory. An updated access or modification date can be important for a variety of other programs such as backup utilities or the makecommand-line interface programming utility. Typically these types of programs are only concerned with files which have been created or modified after the program was last run. The touch command can also be useful for quickly creating files for programs or scripts that require a file with a specific name to exist for successful operation of the program, but do not require the file to have any specific content.
The Single Unix Specification (SUS) specifies that touch should change the access times, modification times, or both, for a file. The file is identified by a pathname supplied as a single argument. It also specifies that if the file identified does not exist, the file is created and the access and modification times are set as specified. If no new timestamps are specified, touch uses the current time.
History[edit]
A touch utility first appeared in Version 7AT&T UNIX. Today, the command is available for a number of different operating systems, including many Unix and Unix-like systems, DOS, Microsoft Windows and the classic Mac OS.[which?]
The version of touch bundled in GNUcoreutils was written by Paul Rubin, Arnold Robbins, Jim Kingdon, David MacKenzie, and Randy Smith.[7]
The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of nativeWin32ports of common GNUUnix-likeutilities.[8] The FreeDOS version was developed by Kris Heidenstrom and is licensed under the GPL.[9]DR DOS 6.0[10] and KolibriOS[11] include an implementation of the touch command. The touch command has also been ported to the IBM i operating system.[12]
See also[edit]
References[edit]
- ^'FLEX 9.0 User's Manual'(PDF).
- ^'AROS Research Operating System'. aros.sourceforge.io.
- ^Paul S. Dayan (1992). The OS-9 Guru - 1 : The Facts. Galactic Industrial Limited. ISBN0-9519228-0-7.
- ^'reactos/reactos'. GitHub.
- ^'ibiblio.org FreeDOS Group -- Utilities'. www.ibiblio.org.
- ^'touch for Windows'.
- ^'touch(1): change file timestamps - Linux man page'. linux.die.net.
- ^'Native Win32 ports of some GNU utilities'. unxutils.sourceforge.net.
- ^'ibiblio.org FreeDOS Package -- touch (Unix-like)'. www.ibiblio.org.
- ^DR DOS 6.0 User Guide Optimisation and Configuration Tips
- ^'Shell - KolibriOS wiki'. wiki.kolibrios.org.
- ^IBM. 'IBM System i Version 7.2 Programming Qshell'(PDF). Retrieved 5 September 2020.
Further reading[edit]
- McElhearn, Kirk (2006). The Mac OS X Command Line: Unix Under the Hood. John Wiley & Sons. ISBN978-0470113851.
External links[edit]
| The Wikibook Guide to Unix has a page on the topic of: Commands |
touch– Commands & Utilities Reference, The Single UNIX Specification, Issue 7 from The Open Grouptouch(1)– Linux User Commands Manualtouch(1)– Plan 9 Programmer's Manual, Volume 1touch(1)– Inferno General commands Manual