.fp 5 CW

.de Af

.ds ;G \\*(;G\\f\\$1\\$3\\f\\$2

.if !\\$4 .Af \\$2 \\$1 "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"

..

.de aF

.ie \\$3 .ft \\$1

.el \{\

.ds ;G \&

.nr ;G \\n(.f

.Af "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"

\\*(;G

.ft \\n(;G \}

..

.de L

.aF 5 \\n(.f "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"

..

.de LR

.aF 5 1 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"

..

.de RL

.aF 1 5 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"

..

.de EX \" start example

.ta 1i 2i 3i 4i 5i 6i

.PP

.RS

.PD 0

.ft 5

.nf

..

.de EE \" end example

.fi

.ft

.PD

.RE

.PP

..

.TH TOUCH 3

.SH NAME

touch \- set file access and modify times

.SH SYNOPSIS

.L "#include <ast.h>"

.sp

.L "int touch(const char* path, time_t atime, time_t mtime, int force);"

.SH DESCRIPTION

.L touch

sets the access and modify times of the file named by

.LR path .

If

.L "force != 0"

then the file is created if it doesn't exist;

otherwise the file is not created and

.L \-1

is returned.

If

.L "force < 0"

then

.L atime

and

.L mtime

are taken verbatim; otherwise

.L "(time_t)(-1)"

retains the current value for the file and

.L "(time_t)(0)"

uses the current time.

.SH CAVEATS

By default the change time is always changed to the current time.