Annotation of src/usr.bin/touch/touch.1, Revision 1.24
1.24 ! jmc 1: .\" $OpenBSD: touch.1,v 1.23 2011/08/28 22:54:05 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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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
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34: .\" @(#)touch.1 8.3 (Berkeley) 4/28/95
35: .\"
1.24 ! jmc 36: .Dd $Mdocdate: August 28 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
1.18 guenther 74: Change the access and modification times to the specified time.
1.20 jmc 75: The argument should be of the form
1.24 ! jmc 76: ccyy-mm-ddTHH:MM:SS[.frac][Z],
1.18 guenther 77: where the parts of the argument represent the following:
78: .Pp
79: .Bl -tag -width .frac -compact -offset indent
1.24 ! jmc 80: .It Ar ccyy
! 81: Year.
! 82: .It Ar mm
! 83: Month:
! 84: a number from 1 to 12.
! 85: .It Ar dd
! 86: Day:
! 87: a number from 1 to 31.
1.18 guenther 88: .It Ar T
89: Either the capital letter
90: .Sq T
91: or a single space.
1.24 ! jmc 92: .It Ar HH
! 93: Hour:
! 94: a number from 0 to 23.
! 95: .It Ar MM
! 96: Minute:
! 97: a number from 0 to 59.
1.18 guenther 98: .It Ar SS
1.24 ! jmc 99: Second:
! 100: a number from 0 to 60
! 101: (permitting a leap second).
! 102: .It Ar frac
1.21 jmc 103: The decimal fraction of the second,
104: either a period or comma,
105: followed by one or more decimal digits.
1.18 guenther 106: .It Ar Z
107: The timezone specifier, a capital letter
108: .Sq Z
109: indicating that the time is in UTC.
110: If not specified, the time is in the local timezone.
111: .El
1.1 deraadt 112: .It Fl m
113: Change the modification time of the file.
114: The access time of the file is not changed unless the
115: .Fl a
116: flag is also specified.
1.11 jmc 117: .It Fl r Ar file
1.7 henning 118: Use the access and modification times from the specified file
1.1 deraadt 119: instead of the current time of day.
1.24 ! jmc 120: .It Fl t Oo Ns Oo Ar cc Oc Ns Ar yy Oc Ns Ar mmddHHMM Ns Op \&. Ns Ar SS
1.1 deraadt 121: Change the access and modification times to the specified time.
1.20 jmc 122: The argument should be of the form
1.24 ! jmc 123: [[cc]yy]mmddHHMM[.SS],
1.20 jmc 124: where the parts of the argument represent the following:
1.1 deraadt 125: .Pp
126: .Bl -tag -width Ds -compact -offset indent
1.24 ! jmc 127: .It Ar ccyy
! 128: Year.
! 129: If yy is specified, but cc is not,
! 130: a value for yy between 69 and 99 results in a cc value of 19.
! 131: Otherwise, a cc value of 20 is used.
! 132: .It Ar mm
! 133: Month:
! 134: a number from 1 to 12.
! 135: .It Ar dd
! 136: Day:
! 137: a number from 1 to 31.
! 138: .It Ar HH
! 139: Hour:
! 140: a number from 0 to 23.
1.1 deraadt 141: .It Ar MM
1.24 ! jmc 142: Minute:
! 143: a number from 0 to 59.
! 144: .It Ar SS
! 145: Second:
! 146: a number from 0 to 60
! 147: (permitting a leap second),
1.21 jmc 148: preceded by a period.
1.24 ! jmc 149: The default is 0.
1.1 deraadt 150: .El
151: .El
1.17 jmc 152: .Sh EXIT STATUS
1.15 sobrado 153: .Ex -std touch
1.1 deraadt 154: .Sh SEE ALSO
1.22 jmc 155: .Xr date 1
1.9 jmc 156: .Sh STANDARDS
1.12 jmc 157: The
158: .Nm
159: utility is compliant with the
1.16 jmc 160: .St -p1003.1-2008
1.12 jmc 161: specification.
162: .Pp
1.1 deraadt 163: The obsolescent form of
164: .Nm touch ,
165: where a time format is specified as the first argument, is supported.
166: When no
1.21 jmc 167: .Fl d , r ,
1.1 deraadt 168: or
169: .Fl t
170: option is specified, there are at least two arguments, and the first
171: argument is a string of digits either eight or ten characters in length,
172: the first argument is interpreted as a time specification of the form
1.24 ! jmc 173: .Dq mmddHHMM[yy] .
1.5 aaron 174: .Sh HISTORY
175: A
176: .Nm
177: utility appeared in
1.6 pjanzen 178: .At v7 .
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