touch.1

unix v7是最后一个广泛发布的研究型UNIX版本

.TH TOUCH 1 
.SH NAME
touch \- update date last modified of a file
.SH SYNOPSIS
.B touch
[
.B \-c
]
file ...
.SH DESCRIPTION
.I Touch
attempts to set the modified date of each
.I file.
This is done by reading a character from the file
and writing it back.
.PP
If a
.I file
does not exist,
an attempt will be made to create it unless the
.B \-c
option is specified.