100 lines
2.9 KiB
Groff
100 lines
2.9 KiB
Groff
.\" Copyright (c) 1980, 1991 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 6.4 (Berkeley) 4/23/91
|
|
.\"
|
|
.Dd April 23, 1991
|
|
.Dt TIME 1
|
|
.Os BSD 4
|
|
.Sh NAME
|
|
.Nm time
|
|
.Nd time command execution
|
|
.Sh SYNOPSIS
|
|
.Nm time
|
|
.Op Fl l
|
|
.Ar command
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm time
|
|
utility
|
|
executes and
|
|
times
|
|
.Ar command
|
|
by initiating a timer and passing the
|
|
.Ar command
|
|
to the
|
|
shell.
|
|
After the
|
|
.Ar command
|
|
finishes,
|
|
.Nm time
|
|
writes to the standard error stream,
|
|
(in seconds):
|
|
the total time elapsed,
|
|
time consumed by system overhead,
|
|
and the time used to execute the
|
|
.Ar command
|
|
process.
|
|
.Pp
|
|
Available options:
|
|
.Bl -tag -width Ds
|
|
.It Fl l
|
|
The contents of the
|
|
.Em rusage
|
|
structure are printed as well.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Xr csh 1
|
|
has its own and syntactically different builtin version of
|
|
.Nm time.
|
|
The command described here
|
|
is available as
|
|
.Pa /bin/time
|
|
to
|
|
.Xr csh
|
|
users.
|
|
.Sh BUGS
|
|
The granularity of seconds on micro processors is crude and
|
|
can result in times being reported for CPU usage which are too large by
|
|
a second.
|
|
.Sh SEE ALSO
|
|
.Xr csh 1
|
|
.Sh FILES
|
|
.Bl -tag -width /usr/include/sys/h/resource.h -compact
|
|
.It Pa /usr/include/sys/h/resource.h
|
|
.El
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
command appeared in
|
|
.At v6 .
|