1.\" $OpenBSD: nice.1,v 1.10 2000/11/10 05:10:37 aaron Exp $ 2.\" $NetBSD: nice.1,v 1.6 1995/08/31 23:30:57 jtc Exp $ 3.\" 4.\" Copyright (c) 1980, 1990, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)nice.1 8.1 (Berkeley) 6/6/93 36.\" 37.Dd June 6, 1993 38.Dt NICE 1 39.Os 40.Sh NAME 41.Nm nice 42.Nd execute a utility with an altered scheduling priority 43.Sh SYNOPSIS 44.Nm nice 45.Op Fl n Ar increment 46.Ar utility 47.Op Ar argument ... 48.Sh DESCRIPTION 49.Nm 50runs 51.Ar utility 52at an altered scheduling priority. 53If an 54.Ar increment 55is given, it is used; otherwise 56an increment of 10 is assumed. 57The superuser can run utilities with priorities higher than normal by using 58a negative 59.Ar increment . 60The priority can be adjusted over a 61range of \-20 (the highest) to 20 (the lowest). 62.Pp 63The options are as follows: 64.Bl -tag -width Ds 65.It Fl n Ar increment 66A positive or negative decimal integer used to modify the system scheduling 67priority of 68.Ar utility . 69.El 70.Pp 71The 72.Nm 73utility shall exit with one of the following values: 74.Pp 75.Bl -tag -width indent -offset indent -compact 76.It 1\-125 77An error occurred. 78.It 126 79The 80.Ar utility 81was found but could not be invoked. 82.It 127 83The 84.Ar utility 85could not be found. 86.El 87.Pp 88Otherwise, the exit status of 89.Nm 90shall be that of 91.Ar utility . 92.Sh SEE ALSO 93.Xr csh 1 , 94.Xr getpriority 2 , 95.Xr setpriority 2 , 96.Xr renice 8 97.Sh COMPATIBILITY 98The historic 99.Fl Ns Ar increment 100option has been deprecated but is still supported in this implementation. 101.Sh STANDARDS 102The 103.Nm 104utility conforms to 105.St -p1003.2-92 . 106.Sh HISTORY 107A 108.Nm 109utility appeared in 110.At v6 . 111.Sh BUGS 112.Nm 113is built into 114.Xr csh 1 115with a slightly different syntax than described here. 116The form 117.Ql nice +10 118nices to positive nice, and 119.Ql nice \-10 120can be used 121by the superuser to give a process more of the processor. 122