Bf -symbolic
This interface is obsoleted by
setpriority(2).
Ef
The
nice ();
function obtains the scheduling priority of the process
from the system and sets it to the priority value specified in
Fa incr .
The priority is a value in the range -20 to 20.
The default priority is 0; lower priorities cause more favorable scheduling.
Only the super-user may lower priorities.
Children inherit the priority of their parent processes via
fork(2).
