File:  [CSRG BSD Unix] / 43BSDReno / lib / libc / gen / nice.3
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CVS tags: HEAD, BSD43reno
BSD 4.3reno

.\" Copyright (c) 1980 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"	@(#)nice.3	6.1 (Berkeley) 5/9/85
.\"
.TH NICE 3C "May 9, 1985"
.UC 4
.SH NAME
nice \- set program priority
.SH SYNOPSIS
.B nice(incr)
.SH DESCRIPTION
.ft B
This interface is obsoleted by setpriority(2).
.ft R
.PP
The scheduling
priority of the process is augmented by
.IR incr .
Positive priorities get less
service than normal.
Priority 10 is recommended to users
who wish to execute long-running programs
without flak from the administration.
.PP
Negative increments are ignored except on behalf of 
the super-user.
The priority is limited to the range
\-20 (most urgent) to 20 (least).
.PP
The priority of a process is
passed to a child process by
.IR fork (2).
For a privileged process to return to normal priority
from an unknown state,
.I nice
should be called successively with arguments
\-40 (goes to priority \-20 because of truncation),
20 (to get to 0),
then 0 (to maintain compatibility with previous versions
of this call).
.SH "SEE ALSO"
nice(1), setpriority(2), fork(2), renice(8)

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