RedHat 5.2

GNU/Linux	RedHat 5.2 (Apollo)
	nice(2)

NICE

NAME

nice − change process priority

#include <unistd.h>

int nice(int inc);

nice adds inc to the priority for the calling pid. Only the superuser may specify a negative increment, or priority increase.

Note that internally, a higher number is a higher priority. Do not confuse this with the priority scheme as used by the nice interface.

On success, zero is returned. On error, −1 is returned, and errno is set appropriately.

EPERM

A non-super user attempts to do a priority increase, a numerical decrease, by supplying a negative inc.

SVr4, SVID EXT, AT&T, X/OPEN, BSD 4.3. SVr4 documents an additional EINVAL error code.