LPC(1B) BSD Compatibility Package Commands LPC(1B)

NAME

lpc - line printer control program

SYNOPSIS

/usr/ucb/lpc [command [parameter...]]

DESCRIPTION

The lpc utility controls the operation of local printers.


Use lpc to perform the following functions:

o start or stop a printer,

o disable or enable a printer's spooling queue,

o rearrange the order of jobs in a print queue, or

o display the status of a printer print queue and printer
daemon.


lpc can be run from the command line or interactively. Specifying lpc
with the optional command andparameter arguments causes lpc to interpret
the first argument as an lpc command, and all other arguments as
parameters to that command. Specifying lpc without arguments causes it to
run interactively, prompting the user for lpc commands with lpc>. By
redirecting the standard input, lpc can read commands from a file.

USAGE

lpc commands can be typed in their entirety or abbreviated to an
unambiguous substring. Some lpc commands are available to all users;
others are available only to super-users.


All users can execute the following lpc commands:

? [command ...] | help [command ...]

Displays a short description of command. command is an lpc command.
If command is not specified, displays a list of lpc commands.


exit | quit

Exits from lpc.


status [all | printer...]

Displays the status of print daemons and print queues. all specifies
that this command is performed on all locally attached printers.
printer indicates this command is performed on specific printers.
Specify printer as an atomic name. See printers.conf(5) for
information regarding naming conventions for atomic names.


Only a super-user can execute the following lpc commands:

abort [all | printer...]

Terminates an active spooling daemon. Disables printing (by
preventing new daemons from being started by lpr(1B)) for printer.
all specifies this command is performed on all locally attached
printers. printer indicates this command is performed on specific
printers. Specify printer as an atomic name. See printers.conf(5) for
information regarding naming conventions for atomic names.


clean [all | printer...]

Removes files created in the print spool directory by the print
daemon from printer 's print queue. all specifies that this command
is performed on all locally attached printers.printer indicates this
command is performed on specific printers. Specify printer as an
atomic name. See printers.conf(5) for information regarding naming
conventions for atomic names.


disable [all | printer ...]

Turns off the print queue for printer. Prevents new printer jobs from
being entered into the print queue for printer by lpr(1B). all
specifies that this command is performed on all locally attached
printers. printer indicates this command is performed on specific
printers. Specify printer as an atomic name. See printers.conf(5) for
information regarding naming conventions for atomic names.


down [all | printer ...] [message]

Turns the queue for printer off and disables printing on printer.
Inserts message in the printer status file. message does not need to
be quoted; multiple arguments to message are treated as arguments are
to echo(1). Use down to take a printer down and inform users. all
specifies that this command is performed on all locally attached
printers. printer indicates this command is performed on specific
printers. Specify printer as an atomic name. See printers.conf(5) for
information regarding naming conventions for atomic names.


enable [all | printer ...]

Enables lpr(1B) to add new jobs in the spool queue. all specifies
that this command is performed on all locally attached printers.
printer indicates this command is performed on specific printers.
Specify printer as an atomic name. See printers.conf(5) for
information regarding naming conventions for atomic names.


restart [all | printer...]

Attempts to start a new printer daemon. restart is useful when a
print daemon dies unexpectedly and leaves jobs in the print queue.
all specifies that this command is performed on all locally attached
printers. printer indicates that this command is performed on
specific printers. Specify printer as an atomic name. See
printers.conf(5) for information regarding naming conventions for
atomic names.


start [all | printer...]

Enables printing. Starts a spooling daemon for the printer. all
specifies that this command is performed on all locally attached
printers. printer indicates the command is performed on specific
printers. Specify printer as an atomic name. See printers.conf(5) for
information regarding naming conventions for atomic names.


stop [all | printer...]

Stops a spooling daemon after the current job is complete. Disables
printing at that time. all specifies that this command is performed
on all locally attached printers. printer indicates this command is
performed on specific printers. Specify printer as an atomic name.
See printers.conf(5) for information regarding naming conventions for
atomic names.


topq printer[request-ID...] [user ...]

Moves request-ID or print jobs belonging to user on printer to the
beginning of the print queue. Specify user as a user's login name.
Specify printer as an atomic name. See printers.conf(5) for
information regarding naming conventions for atomic names.


up [all | printer ...]

Turns the queue for printer on and enables printing on printer.
Deletes the message in the printer status file (inserted by down).
Use up to undo the effects of down. all specifies that this command
is performed on all locally attached printers. printer indicates this
command is performed on specific printers. Specify printer as an
atomic name. See printers.conf(5) for information regarding naming
conventions for atomic names.

EXIT STATUS

The following exit values are returned:

0
Successful completion.


non-zero
An error occurred.

FILES

/etc/printers.conf
System printer configuration database


$HOME/.printers
User-configurable printer database


printers.conf.byname
NIS version of /etc/printers.conf


ou=printers
LDAP version of /etc/printers.conf

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Interface Stability | Standard |
+--------------------+-----------------+

SEE ALSO

lpstat(1), lpq(1B), lpr(1B), lprm(1B), printers.conf(5), attributes(7),
lpsched(8), lpshut(8), svcadm(8)

DIAGNOSTICS

Use the svcs(1) utility to check if svc:/application/print/server is
running. If it is not running, use svcadm enable
svc:/application/print/server to start lpsched. See svcadm(8).

NOTES

When IPP is in use, the user is prompted for a passphrase if the remote
print service is configured to require authentication.


June 20, 2021 LPC(1B)