lpenabled(1)

NAME
     lpenabled - monitor printer output port and enable printer when port is
     writable.

SYNOPSIS
     lpenabled printer [ poll ]  [ delay ]

DESCRIPTION
     lpenabled monitors the output device for the printer specified on the
     command line.  An example output device is /dev/plp.  Once the output
     device is writable (by lp) lpenabled will enable the printer using the
     enable(1) command.

     lpenabled is normally invoked by lpsched(1) when it can not open the
     output device and the output device.  This can happen when the parallel
     port is connected to both a floppy drive and a printer on O2 systems. The
     parallel port will become available once the floppy is ejected at which
     time lpenabled will re-enable the printer allowing printing to continue.
     lpenabled may also be started if the ownership or device privileges are
     changed on the /dev/plp* device such that lp can not write to the device.
     Once the device privileges are restored to 0600 and the ownership is
     reset to lp.sys then lpenabled will re-enable the printer allowing
     printing to continue.

     If lpsched(1) is started with the -nopoll command line option then
     lpsched(1) will not run lpenabled (lpsched(1) will still disable the
     printer even if -nopoll is used).  Note:  lpsched(1) is started in the
     file /etc/init.d/lp at system bootup.

     If the specified printer was not disabled by lpsched(1) then lpenabled
     exits.

     lpenabled is found in print version 1.7 or higher.  lpenabled is only run
     by lpsched(1) on IRIX 6.3 and higher (so IRIX 6.2 systems will not use
     lpenabled even though it may be present).



     printer       Required. The name of the printer to monitor. Only one
                   printer may be monitored.

     [ poll ]      Time period, in seconds, to wait between checking to see if
                   the output port has become available.  Default is 30
                   seconds.

     [ delay ]     Time period, in seconds, to delay before the first check of
                   the parallel port is done.  Default is 30 seconds.  If
                   delay is specified then poll must also be specified.
FILES
     /usr/lib/lpenabled

SEE ALSO
     lp(1), lpstat(1), lpsched(1), enable(1).