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35 .\" @(#)touch.1 8.3 (Berkeley) 4/28/95
36 .\" $FreeBSD: src/usr.bin/touch/touch.1,v 1.11 2001/09/24 17:42:37 obrien Exp $
43 .Nd change file access and modification times
48 .Op Fl t Ar [[CC]YY]MMDDhhmm[.SS]
53 utility sets the modification and access times of files to the
55 If the file doesn't exist, it is created with default permissions.
57 The following options are available:
60 Change the access time of the file.
61 The modification time of the file is not changed unless the
63 flag is also specified.
65 Do not create the file if it does not exist.
68 utility does not treat this as an error.
69 No error messages are displayed and the exit value is not affected.
71 Attempt to force the update, even if the file permissions do not
74 If the file is a symbolic link, change the times of the link
75 itself rather than the file that the link points to.
80 and thus will not create any new files.
82 Change the modification time of the file.
83 The access time of the file is not changed unless the
85 flag is also specified.
87 Use the access and modifications times from the specified file
88 instead of the current time of day.
90 Change the access and modification times to the specified time.
91 The argument should be in the form
92 .Dq [[CC]YY]MMDDhhmm[.SS]
93 where each pair of letters represents the following:
95 .Bl -tag -width Ds -compact -offset indent
97 The first two digits of the year (the century).
99 The second two digits of the year.
106 between 69 and 99 results in a
113 The month of the year, from 1 to 12.
115 the day of the month, from 1 to 31.
117 The hour of the day, from 0 to 23.
119 The minute of the hour, from 0 to 59.
121 The second of the minute, from 0 to 61.
128 letter pairs are not specified, the values default to the current
132 letter pair is not specified, the value defaults to 0.
139 The obsolescent form of
141 where a time format is specified as the first argument, is supported.
146 option is specified, there are at least two arguments, and the first
147 argument is a string of digits either eight or ten characters in length,
148 the first argument is interpreted as a time specification of the form
157 letter pairs are treated as their counterparts specified to the
162 letter pair is in the range 39 to 99, the year is set to 1939 to 1999,
163 otherwise, the year is set in the 21st century.
172 utility is expected to be a superset of the