TOUCH(1) General Commands Manual TOUCH(1)NAME
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.
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TOUCH(1) User Commands TOUCH(1)NAME
touch - change file timestamps
SYNOPSIS
touch [OPTION]... FILE...
DESCRIPTION
Update the access and modification times of each FILE to the current time.
Mandatory arguments to long options are mandatory for short options too.
-a change only the access time
-B, --backward=SECONDS
Modify the time by going back SECONDS seconds. For example, touch -r foo -B 5 bar will make the file bar 5 seconds older than file
foo.
-c, --no-create
do not create any files
-d, --date=STRING
parse STRING and use it instead of current time
-F, --forward=SECONDS
Modify the time by going forward SECONDS seconds. For example, touch -r foo -F 5 bar will make the file bar 5 seconds newer than
file foo.
-f (ignored)
-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
set time given by WORD: access atime use (same as -a) modify mtime (same as -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.
AUTHOR
Written by Paul Rubin, Arnold Robbins, Jim Kingdon, David MacKenzie, and Randy Smith.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
SEE ALSO
The full documentation for touch is maintained as a Texinfo manual. If the info and touch programs are properly installed at your site,
the command
info touch
should give you access to the complete manual.
touch (coreutils) 4.5.3 October 2002 TOUCH(1)