Annotation of src/usr.bin/touch/touch.1, Revision 1.25
1.25 ! jmc 1: .\" $OpenBSD: touch.1,v 1.24 2011/08/31 08:48:40 jmc Exp $
1.1 deraadt 2: .\" $NetBSD: touch.1,v 1.8 1995/08/31 22:10:05 jtc Exp $
3: .\"
4: .\" Copyright (c) 1991, 1993
5: .\" The Regents of the University of California. All rights reserved.
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7: .\" This code is derived from software contributed to Berkeley by
8: .\" the Institute of Electrical and Electronics Engineers, Inc.
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11: .\" modification, are permitted provided that the following conditions
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1.8 millert 18: .\" 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 19: .\" may be used to endorse or promote products derived from this software
20: .\" without specific prior written permission.
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34: .\" @(#)touch.1 8.3 (Berkeley) 4/28/95
35: .\"
1.25 ! jmc 36: .Dd $Mdocdate: August 31 2011 $
1.1 deraadt 37: .Dt TOUCH 1
38: .Os
39: .Sh NAME
40: .Nm touch
41: .Nd change file access and modification times
42: .Sh SYNOPSIS
43: .Nm touch
1.10 otto 44: .Op Fl acm
1.19 jmc 45: .Sm off
1.24 jmc 46: .Op Fl "d " Ar ccyy No - Ar mm No - Ar ddTHH : Ar MM : Ar SS Oo \&. Ar frac Oc Op Ar Z
1.19 jmc 47: .Sm on
1.1 deraadt 48: .Op Fl r Ar file
1.24 jmc 49: .Op Fl t Oo Ns Oo Ar cc Oc Ns Ar yy Oc Ns Ar mmddHHMM Ns Op \&. Ns Ar SS
1.14 sobrado 50: .Ar
1.1 deraadt 51: .Sh DESCRIPTION
52: The
1.5 aaron 53: .Nm
1.1 deraadt 54: utility sets the modification and access times of files to the
55: current time of day.
56: If the file doesn't exist, it is created with default permissions.
57: .Pp
1.4 aaron 58: The options are as follows:
1.1 deraadt 59: .Bl -tag -width Ds
60: .It Fl a
61: Change the access time of the file.
62: The modification time of the file is not changed unless the
63: .Fl m
64: flag is also specified.
65: .It Fl c
66: Do not create the file if it does not exist.
67: The
1.5 aaron 68: .Nm
1.1 deraadt 69: utility does not treat this as an error.
70: No error messages are displayed and the exit value is not affected.
1.19 jmc 71: .Sm off
1.24 jmc 72: .It Fl "d " Ar ccyy No - Ar mm No - Ar ddTHH : Ar MM : Ar SS Oo \&. Ar frac Oc Op Ar Z
1.19 jmc 73: .Sm on
1.25 ! jmc 74: Change the access and modification times to the specified time,
1.18 guenther 75: where the parts of the argument represent the following:
76: .Pp
77: .Bl -tag -width .frac -compact -offset indent
1.24 jmc 78: .It Ar ccyy
79: Year.
80: .It Ar mm
81: Month:
82: a number from 1 to 12.
83: .It Ar dd
84: Day:
85: a number from 1 to 31.
1.18 guenther 86: .It Ar T
87: Either the capital letter
88: .Sq T
89: or a single space.
1.24 jmc 90: .It Ar HH
91: Hour:
92: a number from 0 to 23.
93: .It Ar MM
94: Minute:
95: a number from 0 to 59.
1.18 guenther 96: .It Ar SS
1.24 jmc 97: Second:
98: a number from 0 to 60
99: (permitting a leap second).
100: .It Ar frac
1.21 jmc 101: The decimal fraction of the second,
102: either a period or comma,
103: followed by one or more decimal digits.
1.18 guenther 104: .It Ar Z
105: The timezone specifier, a capital letter
106: .Sq Z
107: indicating that the time is in UTC.
108: If not specified, the time is in the local timezone.
109: .El
1.1 deraadt 110: .It Fl m
111: Change the modification time of the file.
112: The access time of the file is not changed unless the
113: .Fl a
114: flag is also specified.
1.11 jmc 115: .It Fl r Ar file
1.7 henning 116: Use the access and modification times from the specified file
1.1 deraadt 117: instead of the current time of day.
1.24 jmc 118: .It Fl t Oo Ns Oo Ar cc Oc Ns Ar yy Oc Ns Ar mmddHHMM Ns Op \&. Ns Ar SS
1.25 ! jmc 119: Change the access and modification times to the specified time,
1.20 jmc 120: where the parts of the argument represent the following:
1.1 deraadt 121: .Pp
122: .Bl -tag -width Ds -compact -offset indent
1.24 jmc 123: .It Ar ccyy
124: Year.
125: If yy is specified, but cc is not,
126: a value for yy between 69 and 99 results in a cc value of 19.
127: Otherwise, a cc value of 20 is used.
128: .It Ar mm
129: Month:
130: a number from 1 to 12.
131: .It Ar dd
132: Day:
133: a number from 1 to 31.
134: .It Ar HH
135: Hour:
136: a number from 0 to 23.
1.1 deraadt 137: .It Ar MM
1.24 jmc 138: Minute:
139: a number from 0 to 59.
140: .It Ar SS
141: Second:
142: a number from 0 to 60
143: (permitting a leap second),
1.21 jmc 144: preceded by a period.
1.24 jmc 145: The default is 0.
1.1 deraadt 146: .El
147: .El
1.17 jmc 148: .Sh EXIT STATUS
1.15 sobrado 149: .Ex -std touch
1.1 deraadt 150: .Sh SEE ALSO
1.22 jmc 151: .Xr date 1
1.9 jmc 152: .Sh STANDARDS
1.12 jmc 153: The
154: .Nm
155: utility is compliant with the
1.16 jmc 156: .St -p1003.1-2008
1.12 jmc 157: specification.
158: .Pp
1.1 deraadt 159: The obsolescent form of
160: .Nm touch ,
161: where a time format is specified as the first argument, is supported.
162: When no
1.21 jmc 163: .Fl d , r ,
1.1 deraadt 164: or
165: .Fl t
166: option is specified, there are at least two arguments, and the first
167: argument is a string of digits either eight or ten characters in length,
168: the first argument is interpreted as a time specification of the form
1.24 jmc 169: .Dq mmddHHMM[yy] .
1.5 aaron 170: .Sh HISTORY
171: A
172: .Nm
173: utility appeared in
1.6 pjanzen 174: .At v7 .
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