6.2 UNIX Printing

6-17

TCP/IP Configuration Chapter 6
6.2.2 lpd Printing
lpd is an implementation of the standard UNIX line printer daemon
which lets you print across a TCP/IP network without the need to
install software on your workstation with all filtering and banners done
by NIC. Remote printing uses the same commands (lpr, lpq, lpc) as
local printing.
The process begins when the lpr call finds a printer on a remote system
by looking at the remote (rm) entry in the /etc/printcap file for that
printer. lpr handles a print job for a remote printer by o pening a
connection with the lpd process on the remote system and sending the
data file (followed by the control file conta ining control information
for this job) to the remote system. The printer-based lpd then filter s th e
data and prints the job according to information contained in the
control file and its own printcap file.
NIC lpd recognizes the format of a certain printer emulations and
filters the data, if possible, so it can be print ed on the printer type you
specify. You can indicate to the NIC lpd what type of printer is attached
to by either:
1. Accepting the default port setting (PCL, PostScript and other), or
2. Changing the listed emulations via the Telnet or the HTML pages
accessed by MAP or a Web Browser.
The following sections give specific lpd setup instructions for various
systems.

6.2.2.1 Setting Up a BSD Remote Printer to Use lpd

To set up a remote printer on the host that sends jobs to NIC using
printer resident lpd, add an entry to the /etc/printcap file on your
host for each printer you use. The steps are described below.