Compaq 5525B, 5532, 5531 user manual Npd Pseudo-device Interface

npd Pseudo-device Interface

Starting the npd daemon is all that is needed to utilize npd. Integrating any special applications can be done anytime thereafter.

Use the following syntax to start npd:

npd devicefile ipname portname

where:

devicefile Name for a pseudo-tty pair’s slave device acquired by npd

ipname Internal Ethernet Adapter IP name or IP Address

portname Internal Ethernet Adapter I/O port name (i.e. prn)

NOTE: The devicefile cannot exist prior to starting npd and this particular npd daemon cannot be running already. You can have more than one daemon running on the same host, as long as they are not using the same devicefile.

npd /dev/spike.prn spike prn

starts an npd daemon utilizing /dev/spike.prn to send print jobs to the printer attached to the parallel port on the Internal Ethernet Adapter named spike.

By default, npd looks in the /dev directory to find a free pseudo-tty pair (/dev/pty?? and /dev/tty?? files). If your UNIX system has these files in a different directory, you can specify the directory pathname with a -poption.

npd -p /dev/pty /dev/spike.prn spike prn

where /dev/pty is the directory to be searched for a free pseudo-tty pair. Some systems, such as HP-UX, place the master and slave devices in separate directories (i.e. /dev/ptym and /dev/pty). Specify where each of the pairs reside with the -pmand -psoptions.

npd -pm /dev/ptym -ps /dev pty /dev/spike.prn spike prn

where /dev/ptym is the directory searched to find a free pseudo-tty pair’s master device and /dev/pty is the directory used for locating the pseudo-tty pair slave device.

167