LPC(8)                   UNIX System Manager's Manual                   LPC(8)

NAME
	lpc - line printer control program

SYNOPSIS
 	lpc [command [argument ...]]

DESCRIPTION
   	Lpc is used by the system administrator to control the operation of the 
	line printer system.  For each line printer configured in /etc/printcap,
	lpc may be used to:

   		o   disable or enable a printer, 
		o   disable or enable a printer's spooling queue,
		o   rearrange the order of jobs in a spooling queue,
		o   find the status of printers, and their associated spooling
		    queues and printer dameons.

	Without any arguments,lpc will prompt for commands from the standard in-
	put.  If arguments are supplied, lpc interprets the first argument as a
	command and the remaining arguments as parameters to the command.  The 
	standard input may be redirected causing lpc to read commands from file.
	Commands may be abreviated; the following is the list of recognized com-
	mands.

	? [command ...] 
	help [command ...]
		Print a short description of each command specified in the argu-
		ment list, or, if no arguments are given, a list of the recog- 
		nized commands.  

	abort { all | printer } 
		Terminate an active spooling daemon on the local host 
		immediately and then disable printing (preventing new daemons 
		from being started by lpr)  for the specified printers.  

	clean { all | printer } 
		Remove any temporary files, data files, and control files that
		cannot be printed (i.e., do not form a complete printer job)from
		the specified printer queue(s) on the local machine.

	disable { all | printer } 
		Turn the specified printer queues off. This prevents new printer
		jobs from being entered into the queue by lpr.

	down { all | printer } message ... 
		Turn the specified printer queue off, disable printing and put
		message in the printer status file. The message doesn't need to
		be quoted, the remaining arguments are treated like echo(1).  
		This is normally used to take a printer down and let others know
		why lpq(1) will indicate the printer is down and print 
		the status message).

	enable { all | printer } 
		Enable spooling on the local queue for the listed printers. This
		will allow lpr(1) to put new jobs in the spool queue.

	exit
	quit    Exit from lpc.

 	restart { all | printer } 
		Attempt to start a new printer daemon.  This is useful when some
		abnormal condition causes the daemon to die unexpectedly leaving
		jobs in the queue.  Lpq will report that there is no daemon pre-
		sent when this condition occurs.  If the user is the super-user,
		try to abort the current daemon first (i.e., kill and restart a
		stuck daemon).

	start { all | printer } 
		Enable printing and start a spooling daemon for the listed 
		printers.

	status { all | printer }
		Display the status of daemons and queues on the local machine.

	stop { all | printer } 
		Stop a spooling daemon after the current job completes and dis-
		able printing.

	topq printer [ jobnum ... ] [ user ... ] 
		Place the jobs in the order listed at the top of the printer 
		queue.

 	up { all | printer }
		Enable everything and start a new printer daemon. Undoes the ef-
		fects of down.

FILES
  	/etc/printcap       printer description file
   	/var/spool/*        spool directories
	/var/spool/*/lock   lock file for queue control

SEE ALSO
	lpd(8),  lpr(1),  lpq(1),  lprm(1),  printcap(5)

DIAGNOSTICS
  	?Ambiguous command
		abreviation matches more than one command

	?Invalid command 
		no match was found

	?Privileged command 
		command can be executed by root only

HISTORY
	The lpc command appeared in 4.2BSD.

4.2 Berkeley Distribution       March 16, 1991