#new process
nice -n PRIORITYNUMBER PROCESSNAME

#existing process
renice PRIORITYNUMBER PID_PROCESS

http://learnlinux.tsf.org.za/courses/build/internals/ch07s02.html

Example: nice -n 10 date
priority for root: -20 (higher priority) .. 19 (lower priority)
priority for common users: 0..19
To list process and nice value: "ps -el"

how to set the nice value of a process (priority execution)

linux

Bash