nice(TCL)

nice -- change or return process priority

Syntax

nice [priorityincr]

Description

Changes or returns the process priority. If priorityincr is omitted, the current priority is returned. If priorityincr is positive, it is added to the current priority level, up to a system defined maximum (normally 19).

Negative priorityincr values cumulatively increase the program's priority down to a system defined minimum (normally -19); increasing priority with negative niceness values will only work for the superuser.

The new priority is returned.