LPC(8)                                                                  LPC(8)



NAME
       lpc - line printer control program

SYNOPSIS
       /etc/lpc [ command [ argument ... ] ]

DESCRIPTION
       _L_p_c is used by the system administrator to control the operation of the
       line printer system.  For each line printer configured  in  /etc/print‐
       cap, _l_p_c 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 dameons.

       Without any arguments, _l_p_c will prompt for commands from  the  standard
       input.  If arguments are supplied, _l_p_c interprets the first argument as
       a command and the remaining arguments as  parameters  to  the  command.
       The  standard input may be redirected causing _l_p_c to read commands from
       file.  Commands may be abreviated; the following is the list of  recog‐
       nized commands.

       ? [ 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 immedi‐
              ately and then disable printing  (preventing  new  daemons  from
              being started by _l_p_r) 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 _l_p_r.

       down { all | printer } message ...
              Turn the specified printer queue off, disable printing  and  put
              _m_e_s_s_a_g_e  in the printer status file. The message doesn’t need to
              be quoted, the remaining arguments  are  treated  like  _e_c_h_o(1).
              This is normally used to take a printer down and let others know
              why (lpq 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 _l_p_r 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.  _L_p_q 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
              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
              effects of _d_o_w_n.

FILES
       /etc/printcap           printer description file
       /usr/spool/*            spool directories
       /usr/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



4.2 Berkeley Distribution       April 27, 1985                          LPC(8)