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1.1 ! root 1: \fBchreq\fP -- MLP Spooler Command ! 2: ! 3: \fBchreq\fP -dprinter request_num... ! 4: .br ! 5: ! 6: \fBchreq\fP -llifetime request_num... ! 7: .br ! 8: ! 9: \fBchreq\fP -ppriority request_num... ! 10: .br ! 11: ! 12: \fBchreq\fP allows users to change the attributes of spooled requests. The ! 13: changes my be applied to printing, waiting and quiescent requests. The ! 14: following three attributes may be changed: Printer, Priority and Lifetime. ! 15: More than one request may be changed at a time and the scheduler may be ! 16: running. ! 17: ! 18: Changing a request's printer is equivalent to moving the request from one ! 19: printer to another. If the request is currently printing, it is aborted and ! 20: then moved. Then the scheduler will deal with the job in light of its ! 21: new status. ! 22: ! 23: In a like manner, a request's print priority may be changed to a higher or ! 24: lower value. These values can range from 0 to 9 with 0 being the highest ! 25: priority. If the request is currently printing, it will be aborted and ! 26: restarted in an order befitting its new status. ! 27: ! 28: Lifetime is the final attribute that may be changed. When a request is placed ! 29: into the spool, it is assigned a lifetime value. These are \fBT\fPemporary, ! 30: \fBS\fPhort-term, and \fBL\fPong-term. Queued requests with these values have ! 31: lifetimes of 1/2 hour, 24 hours and 1 week respectively. These values may ! 32: be overridden in the MLP Controls database, so check with the system ! 33: administrator to be sure. Requests are assigned a value of \fBT\fP by default ! 34: though this may be overridden by the environment variable \fBMLP_LIFE\fP. ! 35: ! 36: Files ! 37: .br ! 38: \fB/usr/spool/mlp/queue\fP -- Spool queue ! 39: .br ! 40: \fB/usr/spool/mlp/controls\fP -- MLP configuration database ! 41:
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