May 12th 2003: nice
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NICE(1) FreeBSD General Commands Manual NICE(1)
NAME
nice - execute a utility at an altered scheduling priority
SYNOPSIS
nice -n increment utility argument ...
DESCRIPTION
The nice utility runs utility at an altered scheduling priority, by
incrementing its ``nice value by the specified increment, or a default
value of 10. The lower the nice value of a process, the higher its
scheduling priority.
The superuser may specify a negative increment in order to run a utility
with a higher scheduling priority.
Some shells may provide a builtin nice command which is similar or iden-
tical to this utility. Consult the builtin(1) manual page.
EXAMPLES
$ nice -n 5 date
Execute utility `date' at priority 5 assuming the priority of the shell
is 0.
- nice -n 16 nice -n -35 date
Execute utility `date' at priority -19 assuming the priority of the shell
is 0 and you are the super-user.
DIAGNOSTICS
If utility is invoked, the exit status of nice is the exit status of
utility.
An exit status of 126 indicates utility was found, but could not be exe-
cuted. An exit status of 127 indicates utility could not be found.
SEE ALSO
builtin(1), csh(1), idprio(1), rtprio(1), getpriority(2), setpriority(2),
renice(8)
COMPATIBILITY
The traditional -increment option has been deprecated but is still sup-
ported.
STANDARDS
The nice utility conforms to IEEE Std 1003.1-2001 (``POSIX.1).
HISTORY
A nice utility appeared in Version 4 AT&T UNIX.
FreeBSD 4.7 June 6, 1993 FreeBSD 4.7
