.\" Copyright (c) 1983, 1991 The Regents of the University of California.
.\" %sccs.include.redist.man%
.\" @(#)renice.8 6.5 (Berkeley) %G%
.Nd alter priority of running processes
scheduling priority of one or more running processes.
parameters are interpreted as process ID's, process group
a process group causes all processes in the process group
to have their scheduling priority altered.
a user causes all processes owned by the user to have
their scheduling priority altered.
By default, the processes to be affected are specified by
parameters to be interpreted as process group ID's.
parameters to be interpreted as user names.
interpretation to be (the default) process ID's.
renice +1 987 -u daemon root -p 32
would change the priority of process ID's 987 and 32, and
all processes owned by users daemon and root.
Users other than the super-user may only alter the priority of
and can only monotonically increase their ``nice value''
(This prevents overriding administrative fiats.)
may alter the priority of any process
and set the priority to any value in the range
20 (the affected processes will run only when nothing else
0 (the ``base'' scheduling priority),
anything negative (to make things go very fast).
.Bl -tag -width /etc/passwd -compact
to map user names to user ID's
Non super-users can not increase scheduling priorities of their own processes,
even if they were the ones that decreased the priorities in the first place.
projects / unix-history / blob