50 lines
1.5 KiB
Groff
50 lines
1.5 KiB
Groff
.TH TOUCH 1
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.SH NAME
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touch \- change file access and modification times
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.SH SYNOPSIS
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\fBtouch\fR [\fB\-c\fR] [\fB\-a\fR] [\fB\-m\fR] [\fB\-r\fR file] [\fB\-t\fR [CC[YY]]MMDDhhmm[.ss]] [MMDDhhmm[YY]] \fIfile\fR ...\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP 20
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\\fB\\$1\\fR
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# \\$2
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..
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.SH OPTIONS
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.FL "\-c" "Do not create the file if it doesn't already exist"
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.FL "\-a" "Change access time"
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.FL "\-m" "Change modification time"
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.FL "\-r file" "Apply time of specified file"
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.FL "\-t [CC[YY]]MMDDhhmm[.ss]]" "Apply time specified"
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.FL "\-t [MMDDhhmm[YY]]" "Apply time specified (alternate form)"
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.SH EXAMPLES
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.EX "touch *.h" "Make the \fI.h\fP files look recent"
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.EX "touch -t 199610010000 *" "Change date and time of all files in current directory to midnight Oct 1, 1996"
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.SH DESCRIPTION
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.PP
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With no options specified, the times of last modification and last access
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are set to the current time.
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This command is mostly used to trick
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.I make
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into thinking that a file is more recent than it really is.
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If the file being touched does not exist, it is created, unless the \fB\-c\fR
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flag is present.
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.PP
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The \fB\-a\fR or \fB\-m\fR flag may be used to change only the access or
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modification time. The \fB\-r\fR or \fB\-t\fR flag may be used to change
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the times to match the times of another file or to a specified time.
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.SH "SEE ALSO"
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.BR utime (2).
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.SH "AUTHOR"
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.PP
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Original author unknown. Rewritten for POSIX by Peter Holzer
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(hp@vmars.tuwien.ac.at).
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.\" man page updated by A. S. Woodhull 2005-01-15
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