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touch(1) [v7 man page]

TOUCH(1)						      General Commands Manual							  TOUCH(1)

touch - update date last modified of a file SYNOPSIS
touch [ -c ] file ... DESCRIPTION
Touch attempts to set the modified date of each file. This is done by reading a character from the file and writing it back. If a file does not exist, an attempt will be made to create it unless the -c option is specified. TOUCH(1)

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TOUCH(1)                                                           User Commands                                                          TOUCH(1)

touch - change file timestamps SYNOPSIS
Update the access and modification times of each FILE to the current time. A FILE argument that does not exist is created empty, unless -c or -h is supplied. A FILE argument string of - is handled specially and causes touch to change the times of the file associated with standard output. Mandatory arguments to long options are mandatory for short options too. -a change only the access time -c, --no-create do not create any files -d, --date=STRING parse STRING and use it instead of current time -f (ignored) -h, --no-dereference affect each symbolic link instead of any referenced file (useful only on systems that can change the timestamps of a symlink) -m change only the modification time -r, --reference=FILE use this file's times instead of current time -t STAMP use [[CC]YY]MMDDhhmm[.ss] instead of current time --time=WORD change the specified time: WORD is access, atime, or use: equivalent to -a WORD is modify or mtime: equivalent to -m --help display this help and exit --version output version information and exit Note that the -d and -t options accept different time-date formats. DATE STRING
The --date=STRING is a mostly free format human readable date string such as "Sun, 29 Feb 2004 16:21:42 -0800" or "2004-02-29 16:21:42" or even "next Thursday". A date string may contain items indicating calendar date, time of day, time zone, day of week, relative time, rela- tive date, and numbers. An empty string indicates the beginning of the day. The date string format is more complex than is easily docu- mented here but is fully described in the info documentation. AUTHOR
Written by Paul Rubin, Arnold Robbins, Jim Kingdon, David MacKenzie, and Randy Smith. REPORTING BUGS
GNU coreutils online help: <> Report touch translation bugs to <> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
Full documentation at: <> or available locally via: info '(coreutils) touch invocation' GNU coreutils 8.28 January 2018 TOUCH(1)
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