127 lines
3.3 KiB
Groff
127 lines
3.3 KiB
Groff
.\" $NetBSD: time.1,v 1.8 1999/06/05 19:19:19 kleink Exp $
|
|
.\"
|
|
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)time.1 8.1 (Berkeley) 6/6/93
|
|
.\"
|
|
.Dd June 6, 1993
|
|
.Dt TIME 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm time
|
|
.Nd time command execution
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl lp
|
|
.Ar utility
|
|
.Op Ar argument ...
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility
|
|
executes and
|
|
times
|
|
.Ar utility .
|
|
After the
|
|
.Ar utility
|
|
finishes,
|
|
.Nm
|
|
writes the total time elapsed,
|
|
the time consumed by system overhead,
|
|
and the time used to execute
|
|
.Ar utility
|
|
to the standard error stream.
|
|
Times are reported in seconds.
|
|
.Pp
|
|
Available options:
|
|
.Bl -tag -width Ds
|
|
.It Fl l
|
|
The contents of the
|
|
.Ar utility
|
|
process'
|
|
.Em rusage
|
|
structure are printed.
|
|
.It Fl p
|
|
The output is formatted as specified by
|
|
.St -p1003.2-92 .
|
|
.El
|
|
.Pp
|
|
The
|
|
.Xr csh 1
|
|
has its own and syntactically different builtin version of
|
|
.Nm "" .
|
|
The utility described here
|
|
is available as
|
|
.Pa /usr/bin/time
|
|
to
|
|
.Xr csh
|
|
users.
|
|
.Sh DIAGNOSTICS
|
|
The
|
|
.Nm
|
|
utility shall exit with one of the following values:
|
|
.Bl -tag -width indent
|
|
.It 1-125
|
|
An error occurred in the
|
|
.Nm
|
|
utility.
|
|
.It 126
|
|
The
|
|
.Ar utility
|
|
was found but could not be invoked.
|
|
.It 127
|
|
The
|
|
.Ar utility
|
|
could not be found.
|
|
.El
|
|
.Pp
|
|
Otherwise, the exit status of
|
|
.Nm
|
|
shall be that of
|
|
.Ar utility .
|
|
.Sh SEE ALSO
|
|
.Xr csh 1 ,
|
|
.Xr getrusage 2
|
|
.Sh FILES
|
|
.Bl -tag -width <sys/resource.h> -compact
|
|
.It <sys/resource.h>
|
|
.El
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
utility conforms to
|
|
.St -p1003.2-92 .
|
|
.Sh BUGS
|
|
The granularity of seconds on microprocessors is crude and
|
|
can result in times being reported for CPU usage which are too large by
|
|
a second.
|