1993-03-21 12:45:37 +03:00
|
|
|
.\" Copyright (c) 1980, 1990 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.
|
|
|
|
|
.\"
|
1993-08-01 11:22:47 +04:00
|
|
|
.\" from: @(#)nice.1 6.7 (Berkeley) 7/24/91
|
1993-08-28 00:22:04 +04:00
|
|
|
.\" $Id: nice.1,v 1.3 1993/08/27 20:22:04 jtc Exp $
|
1993-03-21 12:45:37 +03:00
|
|
|
.\"
|
|
|
|
|
.Dd July 24, 1991
|
|
|
|
|
.Dt NICE 1
|
1993-08-28 00:22:04 +04:00
|
|
|
.Os
|
1993-03-21 12:45:37 +03:00
|
|
|
.Sh NAME
|
|
|
|
|
.Nm nice
|
1993-08-28 00:22:04 +04:00
|
|
|
.Nd execute a utility with an altered scheduling priority
|
1993-03-21 12:45:37 +03:00
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Nm nice
|
1993-08-28 00:22:04 +04:00
|
|
|
.Op Fl n Ar increment
|
|
|
|
|
.Ar utility
|
|
|
|
|
.Op Ar argument ...
|
1993-03-21 12:45:37 +03:00
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
.Nm Nice
|
|
|
|
|
runs
|
1993-08-28 00:22:04 +04:00
|
|
|
.Ar utility
|
|
|
|
|
at an altered scheduling priority.
|
|
|
|
|
If an
|
|
|
|
|
.Ar increment
|
|
|
|
|
is given, it is used; otherwise
|
|
|
|
|
an increment of 10 is assumed.
|
|
|
|
|
The super-user can run utilities with priorities higher than normal by using
|
|
|
|
|
a negative
|
|
|
|
|
.Ar increment .
|
|
|
|
|
The priority can be adjusted over a
|
|
|
|
|
range of -20 (the higest) to 20 (the lowest).
|
|
|
|
|
.Pp
|
|
|
|
|
Available options:
|
|
|
|
|
.Bl -tag -width indent
|
|
|
|
|
.It Fl n Ar increment
|
|
|
|
|
A positive or negative decimal integer used to modify the system scheduling
|
|
|
|
|
priority of
|
|
|
|
|
.Ar utility.
|
|
|
|
|
.El
|
|
|
|
|
.Sh DIAGNOSTICS
|
|
|
|
|
The
|
1993-03-21 12:45:37 +03:00
|
|
|
.Nm nice
|
1993-08-28 00:22:04 +04:00
|
|
|
utility shall exit with one of the following values:
|
|
|
|
|
.Bl -tag -width indent
|
|
|
|
|
.It 1-125
|
|
|
|
|
An error occured in the
|
1993-03-21 12:45:37 +03:00
|
|
|
.Nm nice
|
1993-08-28 00:22:04 +04:00
|
|
|
utility.
|
|
|
|
|
.It 126
|
|
|
|
|
The
|
|
|
|
|
.Ar utility
|
|
|
|
|
was found but could not be invoked.
|
|
|
|
|
.It 127
|
|
|
|
|
The
|
|
|
|
|
.Ar utility
|
|
|
|
|
could not be found.
|
|
|
|
|
.El
|
1993-03-21 12:45:37 +03:00
|
|
|
.Pp
|
1993-08-28 00:22:04 +04:00
|
|
|
Otherwise, the exit status of
|
|
|
|
|
.Nm nice
|
|
|
|
|
shall be that of
|
|
|
|
|
.Ar utility .
|
|
|
|
|
.Sh COMPATIBILITY
|
|
|
|
|
The historic
|
|
|
|
|
.Fl Ns Ar increment
|
|
|
|
|
option has been deprecated but is still supported in this implementation.
|
1993-03-21 12:45:37 +03:00
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr csh 1 ,
|
|
|
|
|
.Xr renice 8
|
1993-08-28 00:22:04 +04:00
|
|
|
.Sh STANDARDS
|
|
|
|
|
The
|
|
|
|
|
.Nm nice
|
|
|
|
|
utility conforms to
|
|
|
|
|
.St -p1003.2-92 .
|
1993-03-21 12:45:37 +03:00
|
|
|
.Sh HISTORY
|
|
|
|
|
A
|
|
|
|
|
.Nm nice
|
1993-08-28 00:22:04 +04:00
|
|
|
utility appeared in
|
1993-03-21 12:45:37 +03:00
|
|
|
.At v6 .
|
|
|
|
|
.Sh BUGS
|
|
|
|
|
.Nm Nice
|
|
|
|
|
is built into
|
|
|
|
|
.Xr csh 1
|
|
|
|
|
with a slightly different syntax than described here. The form
|
|
|
|
|
.Ql nice +10
|
|
|
|
|
nices to positive nice, and
|
|
|
|
|
.Ql nice \-10
|
|
|
|
|
can be used
|
|
|
|
|
by the super-user to give a process more of the processor.
|
