touch - change file timestamps



  • 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.
    
           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,  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.
    
    AUTHOR
           Written by Paul Rubin, Arnold Robbins, Jim Kingdon, David MacKenzie, and Randy Smith.
    
    REPORTING BUGS
           GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
           Report touch translation bugs to <http://translationproject.org/team/>
    
    COPYRIGHT
           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.
    
    SEE ALSO
           Full documentation at: <http://www.gnu.org/software/coreutils/touch>
           or available locally via: info '(coreutils) touch invocation'
    
    GNU coreutils 8.25			  February 2017 				 TOUCH(1)
    

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