lpc man page on 4.4BSD

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LPC(8)			  BSD 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:

	   ·   disable or enable a printer,

	   ·   disable or enable a printer's spooling queue,

	   ·   rearrange the order of jobs in a spooling queue,

	   ·   find the status of printers, and their associated spooling
	       queues and printer daemons.

     Without any arguments, lpc will prompt for commands from the standard
     input.  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 abbreviated; 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 argument is given, a list of the recognized
	     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
	     present 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 print‐
	     ers.

     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
	     effects 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
	     abbreviation matches more than one command

     ?Invalid command
	     no match was found

     ?Privileged command
	     you must be a member of group "operator" or root to execute this
	     command

HISTORY
     The lpc command appeared in 4.2BSD.

4.2 Berkeley Distribution	April 28, 1995	     4.2 Berkeley Distribution
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