V8/usr/man/man8/renice.8

.TH RENICE 8
.SH NAME
renice \- alter priority of running process by changing nice
.SH SYNOPSIS
.B /etc/renice
[ \-pri ]
pid ...
.SH DESCRIPTION
.I Renice
alters the 
priority of the process with process-id
.I pid.
The default
.I pri
is 19.
Changing the priority requires permission to write
.IR /proc/ pid
(see
.IR proc (4)),
so only the super-user can alter an arbitrary process's priority.
Only the super-user can raise a process's priority.
.SH FILES
.RI /proc/ pid
.SH SEE ALSO
nice(1), nice(2), proc(4)