lpc(8)lpc(8)NAMElpc - Line printer control program
The lpc command is used by the system administrator to control the
operation of the line printer system. For each line printer configured
in the /etc/printcap file, the lpc command may be used for disabling or
enabling a printer; disabling or enabling the printer spooling queue;
rearranging the order of jobs in a spooling queue or finding the status
of printers, their associated spooling queues, and the printer daemons.
Without arguments, lpc prompts for commands from the standard input.
When arguments are supplied, lpc interprets the first argument as a
command and any remaining arguments as command parameters. The stan‐
dard input may be redirected so that lpc reads commands from a file.
The following is the list of recognized lpc commands: Prints a short
description of each command specified in the argument list or, when no
arguments are supplied, a list of the recognized commands. Prints a
short description of each command specified in the argument list or,
when no arguments are supplied, a list of the recognized commands.
Terminates an active spooling daemon running on the local host, and
then disables printing. This prevents new daemons from being started by
lpr or lp for the specified printers. [Tru64 UNIX] Examines the
printer description file and other components of the printing environ‐
ment for potential configuration errors for each named printer.
A diagnostic message for each possible problem found is dis‐
played. The file name containing a possible problem precedes the
message; otherwise, the name of a printer with a possible prob‐
lem precedes the message. If no problems were detected, the mes‐
sage No configuration problems found is displayed.
The check subcommand reports problems; it does not correct them.
The check subcommand checks for the printer characteristic names
that are listed in the Printer capability data base only; for
further information, see the printcap(4) reference page. If lpc
check finds a nonstandard printer characteristic name, it gener‐
ates a diagnostic message even though the printer characteristic
may be used correctly in a special user-written filter. Removes
any temporary files, data files, and control files that cannot
be printed (files that do not form a complete printer job) from
the specified printer queue(s) on the local machine. Turns the
specified printer queues off. This prevents new printer jobs
from being entered into the queue by lpr or lp. Turns the spec‐
ified printer queue off, disables printing, and puts a message
in the printer status file. The message does not need to be
quoted because remaining arguments are treated the same as echo.
The down command is normally used to take a printer down and let
others know why. (The lpq command indicates that the printer is
down and prints a status message.) Enables spooling on the
local queue for the listed printers. This allows lpr or lp to
put new jobs in the spool queue. Exit from lpc. Exit from lpc.
Attempts to start a new printer daemon. This is useful when some
abnormal condition causes the daemon to terminate unexpectedly
and leave jobs in the queue. lpq reports that there is no dae‐
mon present when this condition occurs. When a daemon is stuck,
you must first kill it and then restart. Enables printing and
starts a spooling daemon for the listed printers. Displays the
status of daemons and queues on the local machine. When printer
name parameters are not supplied, information about all printers
is provided. Stops a spooling daemon after the current job has
completed and disables printing. Places jobs in the order
listed at the top of the printer queue. Enables all printing
and starts a new printer daemon. Cancels the effect of the down
Normally, the clean subcommand allows you to remove all print jobs on
the system or all jobs on a specified printer. However, clean does not
remove the jobs in the spooling queues. Therefore, you should use the
lprm command on a printer-by-printer basis to remove the jobs you want
The following diagnostic messages are possible. Abbreviation matches
more than one command. No match was found. Command may be executed by
the superuser only.
Specifies the command path Specifies the printer description file Spec‐
ifies print spool directories Specifies the lock file for queue control
Commands: cancel(1), lp(1), lpd(8), lpr(1), lpq(1), lprm(1), lpstat(1)