execute a utility at an altered scheduling
at an altered scheduling priority, by
incrementing its “nice” value by the specified
, 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
command which is similar or identical to this utility. Consult the
environment variable is used to
locate the requested utility
if the name
contains no ‘
is invoked, the exit status of
is the exit status of
An exit status of 126 indicates utility
found, but could not be executed. An exit status of 127 indicates
could not be found.
Execute utility ‘date’ at priority 5 assuming the priority of the
shell is 0:
nice -n 5 date
Execute utility ‘date’ at priority -19 assuming the priority of
the shell is 0 and you are the super-user:
nice -n 16 nice -n -35
option has been deprecated but is still supported.
utility conforms to
IEEE Std 1003.1-2001
utility appeared in
Version 4 AT&T UNIX