freebsd-skq/usr.bin/nice/nice.1
Sheldon Hearn e6d3cf2648 Correct some hard sentence breaks. Only those surrounding the previous
commit and those which cause ugly nroff output have been fixed, since
the purpose of the style guideline which they contravene is to reduce
the sizes of deltas.

Reported by:	bde
1999-09-14 11:46:04 +00:00

111 lines
3.2 KiB
Groff

.\" Copyright (c) 1980, 1990, 1993
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.\" @(#)nice.1 8.1 (Berkeley) 6/6/93
.\" $FreeBSD$
.\"
.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
.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 not given
.Nm
assumed the value 10.
The priority is a value in the range -20 to 20.
The default priority is 0, priority 20 is the lowest possible.
.Nm Nice
will execute
.Ar command
at priority
.Ar number
relative to the priority
of
.Nm nice .
Higher priorities than the
current process priority can only 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 .
.Pp
Some shells may provide a builtin
.Nm
command which is similar or identical to this utility.
Consult the
.Xr builtin 1
manual page.
.Sh EXAMPLES
.Pp
$ nice -5 date
.Pp
Execute command
.Sq date
at priority 5 assuming the priority of the
shell is 0.
.Pp
# nice -16 nice --35 date
.Pp
Execute command
.Sq date
at priority -19 assuming the priority of the
shell is 0 and you are the super-user.
.Sh SEE ALSO
.Xr builtin 1 ,
.Xr csh 1 ,
.Xr idprio 1 ,
.Xr rtprio 1 ,
.Xr getpriority 2 ,
.Xr setpriority 2 ,
.Xr renice 8
.Sh HISTORY
A
.Nm
command appeared in
.At v6 .