/usr/lib/lpusers -q priority-level -u user-list
/usr/lib/lpusers -u user-list
/usr/lib/lpusers -q priority-level
The first form of the command (with -d) sets the system-wide priority default to priority-level, where priority-level is a value of 0 to 39, with 0 being the highest priority. If a user does not specify a priority level with a print request (see lp(C)), the default priority is used. Initially, the default priority level is 20.
The second form of the command (with -q and -u) sets the default highest priority-level (0-39) that the users in user-list can request when submitting a print request. Users that have been given a limit cannot submit a print request with a higher priority level than the one assigned, nor can they change a request already submitted to have a higher priority. Any print requests with priority levels higher than allowed will be given the highest priority allowed.
The third form of the command (with -u) removes the users from any explicit priority level and returns them to the default priority level.
The fourth form of the command (with -q) sets the default highest priority level for all users not explicitly covered by the use of the second form of this command.
The last form of the command (with -l) lists the default priority level and the priority limits assigned to users.