git.saurik.com Git - apple/shell_cmds.git/blame_incremental

... / ...

Commit	Line	Data
	1	.\" Copyright (c) 1983, 1991, 1993
	2	.\" The Regents of the University of California. All rights reserved.
	3	.\"
	4	.\" Redistribution and use in source and binary forms, with or without
	5	.\" modification, are permitted provided that the following conditions
	6	.\" are met:
	7	.\" 1. Redistributions of source code must retain the above copyright
	8	.\" notice, this list of conditions and the following disclaimer.
	9	.\" 2. Redistributions in binary form must reproduce the above copyright
	10	.\" notice, this list of conditions and the following disclaimer in the
	11	.\" documentation and/or other materials provided with the distribution.
	12	.\" 3. All advertising materials mentioning features or use of this software
	13	.\" must display the following acknowledgement:
	14	.\" This product includes software developed by the University of
	15	.\" California, Berkeley and its contributors.
	16	.\" 4. Neither the name of the University nor the names of its contributors
	17	.\" may be used to endorse or promote products derived from this software
	18	.\" without specific prior written permission.
	19	.\"
	20	.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	21	.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	22	.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	23	.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	24	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	25	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	26	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	27	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	28	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	29	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	30	.\" SUCH DAMAGE.
	31	.\"
	32	.\" @(#)renice.8 8.1 (Berkeley) 6/9/93
	33	.\" $FreeBSD: src/usr.bin/renice/renice.8,v 1.16 2003/02/26 20:27:24 charnier Exp $
	34	.\"
	35	.Dd June 9, 1993
	36	.Dt RENICE 8
	37	.Os
	38	.Sh NAME
	39	.Nm renice
	40	.Nd alter priority of running processes
	41	.Sh SYNOPSIS
	42	.Nm
	43	.Ar priority
	44	.Op Oo Fl p Oc Ar pid ...
	45	.Op Oo Fl g Oc Ar pgrp ...
	46	.Op Oo Fl u Oc Ar user ...
	47	.Nm
	48	.Fl n Ar increment
	49	.Op Oo Fl p Oc Ar pid ...
	50	.Op Oo Fl g Oc Ar pgrp ...
	51	.Op Oo Fl u Oc Ar user ...
	52	.Sh DESCRIPTION
	53	The
	54	.Nm
	55	utility alters the
	56	scheduling priority of one or more running processes.
	57	The following
	58	.Ar who
	59	parameters are interpreted as process ID's, process group
	60	ID's, user ID's or user names.
	61	The
	62	.Nm Ns 'ing
	63	of a process group causes all processes in the process group
	64	to have their scheduling priority altered.
	65	The
	66	.Nm Ns 'ing
	67	of a user causes all processes owned by the user to have
	68	their scheduling priority altered.
	69	By default, the processes to be affected are specified by
	70	their process ID's.
	71	.Pp
	72	The following options are available:
	73	.Bl -tag -width indent
	74	.It Fl g
	75	Force
	76	.Ar who
	77	parameters to be interpreted as process group ID's.
	78	.It Fl n
	79	Instead of changing the specified processes to the given priority,
	80	interpret the following argument as an increment to be applied to
	81	the current priority of each process.
	82	.It Fl u
	83	Force the
	84	.Ar who
	85	parameters to be interpreted as user names or user ID's.
	86	.It Fl p
	87	Reset the
	88	.Ar who
	89	interpretation to be (the default) process ID's.
	90	.El
	91	.Pp
	92	For example,
	93	.Pp
	94	.Dl "renice +1 987 -u daemon root -p 32"
	95	.Pp
	96	would change the priority of process ID's 987 and 32, and
	97	all processes owned by users daemon and root.
	98	.Pp
	99	Users other than the super-user may only alter the priority of
	100	processes they own,
	101	and can only monotonically increase their ``nice value''
	102	within the range 0 to
	103	.Dv PRIO_MAX
	104	(20).
	105	(This prevents overriding administrative fiats.)
	106	The super-user
	107	may alter the priority of any process
	108	and set the priority to any value in the range
	109	.Dv PRIO_MIN
	110	(\-20)
	111	to
	112	.Dv PRIO_MAX .
	113	Useful priorities are:
	114	20 (the affected processes will run at the lowest priority),
	115	0 (the ``base'' scheduling priority),
	116	anything negative (lower values cause more favorable scheduling).
	117	.Sh FILES
	118	.Bl -tag -width /etc/passwd -compact
	119	.It Pa /etc/passwd
	120	to map user names to user ID's
	121	.El
	122	.Sh SEE ALSO
	123	.Xr nice 1 ,
	124	.Xr getpriority 2 ,
	125	.Xr setpriority 2
	126	.Sh STANDARDS
	127	The
	128	.Nm
	129	utility conforms to
	130	.St -p1003.1-2001 .
	131	.Sh HISTORY
	132	The
	133	.Nm
	134	utility appeared in
	135	.Bx 4.0 .
	136	.Sh BUGS
	137	Non super-users cannot increase scheduling priorities of their own processes,
	138	even if they were the ones that decreased the priorities in the first place.