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-.\" $NetBSD: renice.8,v 1.15 2012/12/06 07:52:12 wiz Exp $
-.\"
-.\" Copyright (c) 1983, 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. 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.
-.\"
-.\" from: @(#)renice.8 8.1 (Berkeley) 6/9/93
-.\"
-.Dd December 6, 2012
-.Dt RENICE 8
-.Os
-.Sh NAME
-.Nm renice
-.Nd alter priority of running processes
-.Sh SYNOPSIS
-.Nm
-.Ar priority
-.Oo
-.Op Fl p
-.Ar pid ...
-.Oc
-.Oo
-.Fl g
-.Ar pgrp ...
-.Oc
-.Oo
-.Fl u
-.Ar user ...
-.Oc
-.Nm
-.Fl n
-.Ar increment
-.Oo
-.Op Fl p
-.Ar pid ...
-.Oc
-.Oo
-.Fl g
-.Ar pgrp ...
-.Oc
-.Oo
-.Fl u
-.Ar user ...
-.Oc
-.Sh DESCRIPTION
-.Nm
-alters the
-scheduling priority of one or more running processes.
-The following
-.Ar who
-parameters are interpreted as process ID's, process group
-ID's, or user names.
-.Nm Ns 'ing
-a process group causes all processes in the process group
-to have their scheduling priority altered.
-.Nm Ns 'ing
-a user causes all processes owned by the user to have
-their scheduling priority altered.
-By default, the processes to be affected are specified by
-their process ID's.
-.Pp
-Options supported by
-.Nm :
-.Bl -tag -width Ds
-.It Fl g
-Force
-.Ar who
-parameters to be interpreted as process group ID's.
-.It Fl n
-Instead of changing the specified processes to the given priority,
-interpret the following argument as an increment to be applied to
-the current priority of each process.
-.It Fl u
-Force the
-.Ar who
-parameters to be interpreted as user names.
-.It Fl p
-Resets the
-.Ar who
-interpretation to be (the default) process ID's.
-.El
-.Pp
-For example,
-.Bd -literal -offset indent
-renice +1 987 -u daemon root -p 32
-.Ed
-.Pp
-would change the priority of process ID's 987 and 32, and
-all processes owned by users daemon and root.
-.Pp
-Users other than the super-user may only alter the priority of
-processes they own,
-and can only monotonically increase their ``nice value''
-within the range 0 to
-.Dv PRIO_MAX
-(20).
-(This prevents overriding administrative fiats.)
-The super-user
-may alter the priority of any process
-and set the priority to any value in the range
-.Dv PRIO_MIN
-(\-20)
-to
-.Dv PRIO_MAX .
-.Pp
-Useful priorities are:
-0, the ``base'' scheduling priority;
-20, the affected processes will run only when nothing at the base priority
-wants to;
-anything negative, the processes will receive a scheduling preference.
-.Sh FILES
-.Bl -tag -width /etc/passwd -compact
-.It Pa /etc/passwd
-to map user names to user ID's
-.El
-.Sh SEE ALSO
-.Xr nice 1 ,
-.Xr prenice 1 ,
-.Xr getpriority 2 ,
-.Xr setpriority 2
-.Sh HISTORY
-The
-.Nm
-command appeared in
-.Bx 4.0 .
-.Sh BUGS
-Non super-users can not increase scheduling priorities of their own processes,
-even if they were the ones that decreased the priorities in the first place.