1TOUCH(1)                         User Commands                        TOUCH(1)
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NAME

6       touch - change file timestamps
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SYNOPSIS

9       touch [OPTION]... FILE...
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DESCRIPTION

12       Update  the  access  and modification times of each FILE to the current
13       time.
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15       A FILE argument that does not exist is created empty, unless -c  or  -h
16       is supplied.
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18       A  FILE  argument  string of - is handled specially and causes touch to
19       change the times of the file associated with standard output.
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21       Mandatory arguments to long options are  mandatory  for  short  options
22       too.
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24       -a     change only the access time
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26       -c, --no-create
27              do not create any files
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29       -d, --date=STRING
30              parse STRING and use it instead of current time
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32       -f     (ignored)
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34       -h, --no-dereference
35              affect each symbolic link instead of any referenced file (useful
36              only on systems that can change the timestamps of a symlink)
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38       -m     change only the modification time
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40       -r, --reference=FILE
41              use this file's times instead of current time
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43       -t STAMP
44              use [[CC]YY]MMDDhhmm[.ss] instead of current time
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46       --time=WORD
47              change the specified time: WORD is access, atime, or use: equiv‐
48              alent to -a WORD is modify or mtime: equivalent to -m
49
50       --help display this help and exit
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52       --version
53              output version information and exit
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55       Note that the -d and -t options accept different time-date formats.
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57       GNU  coreutils  online  help:  <http://www.gnu.org/software/coreutils/>
58       Report touch translation bugs to <http://translationproject.org/team/>
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DATE STRING

61       The --date=STRING is a mostly free format human  readable  date  string
62       such  as  "Sun, 29 Feb 2004 16:21:42 -0800" or "2004-02-29 16:21:42" or
63       even "next Thursday".  A date string may contain items indicating  cal‐
64       endar  date,  time of day, time zone, day of week, relative time, rela‐
65       tive date, and numbers.  An empty string indicates the beginning of the
66       day.   The date string format is more complex than is easily documented
67       here but is fully described in the info documentation.
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AUTHOR

70       Written by Paul Rubin, Arnold Robbins, Jim  Kingdon,  David  MacKenzie,
71       and Randy Smith.
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74       Copyright  ©  2013  Free Software Foundation, Inc.  License GPLv3+: GNU
75       GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
76       This is free software: you are free  to  change  and  redistribute  it.
77       There is NO WARRANTY, to the extent permitted by law.
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SEE ALSO

80       The full documentation for touch is maintained as a Texinfo manual.  If
81       the info and touch programs are properly installed at  your  site,  the
82       command
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84              info coreutils 'touch invocation'
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86       should give you access to the complete manual.
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90GNU coreutils 8.22               October 2018                         TOUCH(1)
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