TOUCH(1) User Commands TOUCH(1)
touch – change file timestamps
touch [OPTION]… FILE…
Update the access and modification times of each FILE to the current
A FILE argument that does not exist is created empty, unless -c or -h
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
-a change only the access time
do not create any files
parse STRING and use it instead of current time
affect each symbolic link instead of any referenced file
(useful only on systems that can change the timestamps of a
-m change only the modification time
use this file’s times instead of current time
use [[CC]YY]MMDDhhmm[.ss] instead of current time
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
output version information and exit
Note that the -d and -t options accept different time-date formats.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
Report touch translation bugs to
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,
relative date, and numbers. An empty string indicates the beginning
of the day. The date string format is more complex than is easily
documented here but is fully described in the info documentation.
Written by Paul Rubin, Arnold Robbins, Jim Kingdon, David MacKenzie,
and Randy Smith.
Copyright © 2014 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
The full documentation for touch is maintained as a Texinfo manual.
If the info and touch programs are properly installed at your site,
info coreutils ‘touch invocation’
should give you access to the complete manual.
This page is part of the coreutils (basic file, shell and text
manipulation utilities) project. Information about the project can
be found at ⟨http://www.gnu.org/software/coreutils/⟩. If you have a
bug report for this manual page, see
⟨http://www.gnu.org/software/coreutils/⟩. This page was obtained from
the tarball coreutils-8.23.tar.xz fetched from
⟨http://www.gnutls.org/download.html⟩ on 2014-12-30. If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to [email protected]
GNU coreutils 8.23 December 2014 TOUCH(1)