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TOUCH(1)		FreeBSD	General	Commands Manual		      TOUCH(1)

NAME
     touch -- change file access and modification times

SYNOPSIS
     touch [-acfhm] [-r	file] [-t [[CC]YY]MMDDhhmm[.SS]] file ...

DESCRIPTION
     The touch utility sets the	modification and access	times of files to the
     current time of day.  If the file doesn't exist, it is created with
     default permissions.

     The following options are available:

     -a	     Change the	access time of the file.  The modification time	of the
	     file is not changed unless	the -m flag is also specified.

     -c	     Do	not create the file if it does not exist.  The touch utility
	     does not treat this as an error.  No error	messages are displayed
	     and the exit value	is not affected.

     -f	     Attempt to	force the update, even if the file permissions do not
	     currently permit it.

     -h	     If	the file is a symbolic link, change the	times of the link
	     itself rather than	the file that the link points to.  Note	that
	     -h	implies	-c and thus will not create any	new files.

     -m	     Change the	modification time of the file.	The access time	of the
	     file is not changed unless	the -a flag is also specified.

     -r	     Use the access and	modifications times from the specified file
	     instead of	the current time of day.

     -t	     Change the	access and modification	times to the specified time.
	     The argument should be in the form	``[[CC]YY]MMDDhhmm[.SS]''
	     where each	pair of	letters	represents the following:

		   CC	   The first two digits	of the year (the century).
		   YY	   The second two digits of the	year.  If ``YY'' is
			   specified, but ``CC'' is not, a value for ``YY''
			   between 69 and 99 results in	a ``CC'' value of 19.
			   Otherwise, a	``CC'' value of	20 is used.
		   MM	   The month of	the year, from 1 to 12.
		   DD	   the day of the month, from 1	to 31.
		   hh	   The hour of the day,	from 0 to 23.
		   mm	   The minute of the hour, from	0 to 59.
		   SS	   The second of the minute, from 0 to 61.

	     If	the ``CC'' and ``YY'' letter pairs are not specified, the val-
	     ues default to the	current	year.  If the ``SS'' letter pair is
	     not specified, the	value defaults to 0.

DIAGNOSTICS
     The touch utility exits 0 on success, and >0 if an	error occurs.

SEE ALSO
     utimes(2)

COMPATIBILITY
     The obsolescent form of touch, where a time format	is specified as	the
     first argument, is	supported.  When no -r or -t option is specified,
     there are at least	two arguments, and the first argument is a string of
     digits either eight or ten	characters in length, the first	argument is
     interpreted as a time specification of the	form ``MMDDhhmm[YY]''.

     The ``MM'', ``DD'', ``hh''	and ``mm'' letter pairs	are treated as their
     counterparts specified to the -t option.  If the ``YY'' letter pair is in
     the range 39 to 99, the year is set to 1939 to 1999, otherwise, the year
     is	set in the 21st	century.

HISTORY
     A touch utility appeared in Version 7 AT&T	UNIX.

STANDARDS
     The touch utility is expected to be a superset of the IEEE	Std 1003.2
     (``POSIX.2'') specification.

FreeBSD	9.2			April 28, 1995			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | DIAGNOSTICS | SEE ALSO | COMPATIBILITY | HISTORY | STANDARDS

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