lprm man page on FreeBSD

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LPRM(1)			  BSD General Commands Manual		       LPRM(1)

     lprm — remove jobs from the line printer spooling queue

     lprm [-Pprinter] [-] [job # ...] [user ...]

     The lprm utility will remove a job, or jobs, from a printer's spool
     queue.  Since the spooling directory is protected from users, using lprm
     is normally the only method by which a user may remove a job.  The owner
     of a job is determined by the user's login name and host name on the
     machine where the lpr(1) command was invoked.

     Options and arguments:

	     Specify the queue associated with a specific printer (otherwise
	     the default printer is used).

     -	     If a single ‘-’ is given, lprm will remove all jobs which a user
	     owns.  If the super-user employs this flag, the spool queue will
	     be emptied entirely.

     user    Cause lprm to attempt to remove any jobs queued belonging to that
	     user (or users).  This form of invoking lprm is useful only to
	     the super-user.

     job #   A user may dequeue an individual job by specifying its job num‐
	     ber.  This number may be obtained from the lpq(1) program, e.g.

		   % lpq -l

		   1st:ken			   [job #013ucbarpa]
			   (standard input)	   100 bytes
		   % lprm 13

     If neither arguments or options are given, lprm will delete the currently
     active job if it is owned by the user who invoked lprm.

     The lprm utility announces the names of any files it removes and is
     silent if there are no jobs in the queue which match the request list.

     The lprm utility will kill off an active daemon, if necessary, before
     removing any spooling files.  If a daemon is killed, a new one is auto‐
     matically restarted upon completion of file removals.

     If the following environment variable exists, it is utilized by lprm.

     PRINTER  If the environment variable PRINTER exists, and a printer has
	      not been specified with the -P option, the default printer is
	      assumed from PRINTER.

     /etc/printcap	 Printer characteristics file.
     /var/spool/*	 Spooling directories.
     /var/spool/*/lock	 Lock file used to obtain the pid of the current dae‐
			 mon and the job number of the currently active job.

     ``Permission denied" if the user tries to remove files other than his

     lpq(1), lpr(1), lpd(8)

     The lprm command appeared in 3.0BSD.

     Since there are race conditions possible in the update of the lock file,
     the currently active job may be incorrectly identified.

BSD				 June 6, 1993				   BSD

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