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Diffstat (limited to 'usr.bin/nice/nice.1')
-rw-r--r-- | usr.bin/nice/nice.1 | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/usr.bin/nice/nice.1 b/usr.bin/nice/nice.1 new file mode 100644 index 0000000..67b8471 --- /dev/null +++ b/usr.bin/nice/nice.1 @@ -0,0 +1,97 @@ +.\" Copyright (c) 1980, 1990, 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. 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. +.\" +.\" @(#)nice.1 8.1 (Berkeley) 6/6/93 +.\" +.Dd June 6, 1993 +.Dt NICE 1 +.Os BSD 4 +.Sh NAME +.Nm nice +.Nd execute a command at a low scheduling priority +.Sh SYNOPSIS +.Nm nice +.Op Fl Ns Ar number +.Ar command +.Op Ar arguments +.Sh DESCRIPTION +.Nm Nice +runs +.Ar command +at a low priority. +(Think of low and slow). +If +.Fl Ns Ar number +is specified, and if it is greater than or equal +to 10 (the default), +.Nm nice +will execute +.Ar command +at that priority. +The upper bound, or lowest priority that +.Nm nice +will run a command is 20. +The lower bounds or +higher priorities (integers less than 10) +can only be requested by the super-user. +Negative numbers are expressed as +.Fl - Ns Ar number . +.Pp +The returned exit status is the exit value from the +command executed by +.Nm nice . +.Sh SEE ALSO +.Xr csh 1 , +.Xr renice 8 +.Sh HISTORY +A +.Nm nice +command appeared in +.At v6 . +.Sh BUGS +.Nm Nice +is particular to +.Xr sh 1 . +If you use +.Xr csh 1 , +then commands executed with ``&'' are automatically immune to hangup +signals while in the background. +.Pp +.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. |