nice

nice [option] command [arguments]

Execute a command and arguments with lower priority (i.e., be "nice" to other users).

Option

-n

Run command with a niceness of n (1-19); default is 10. Higher n means lower priority. A privileged user can raise priority by specifying a negative n (e.g., -5). nice works differently in the C shell (see Section 5). +n raises priority, -n lowers it, and 4 is the default.