- Create a new empty file(s) or change the times for existing file(s) to current time:touch [filename]- Set the times on a file to a specific date and time:touch -t [YYYYMMDDHHMM.SS] [filename]- Use the times from a file to set the times on a second file:touch -r [filename] [filename2]
touch [,OPTION/]... ,FILE/...
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.
Note that the -d and -t options accept different time-date formats.
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.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report touch translation bugs to <http://translationproject.org/team/>
Copyright © 2016 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.
Full documentation at: <http://www.gnu.org/software/coreutils/touch> or available locally via: info '(coreutils) touch invocation'