System Administration Guide, Volume 2

Restarting the Print Scheduler

The print scheduler, lpsched, handles print requests on print servers. However, there might be times when the print scheduler stops running on a system, so print requests stop being accepted or printed.

To restart the print scheduler, you can use the /usr/lib/lp/lpsched command. If a print request was printing when the print scheduler stopped running, the print request will be printed in its entirety when you restart the print scheduler.