The X Print Server (Xprt) can read a number of configuration files which control its behavior and support for printers. Each vendor platform has a default location for this information. Xprt can also read the environment variable XPCONFIGDIR to locate alternate configuration directories. Common settings include:

Xprt has many built-in defaults, and lacking any configuration files, will immediately try to support all printers visible via lpstat(1).

In order of importance for configuration by a system administrator, the configuration files for a "C" locale are as follows.

${XPCONFIGDIR}/C/print/Xprinters

`Xprinters' is the top most configuration file.  It tells
Xprt which specific printer names (e.g.  mylaser) should
be supported, and whether lpstat(1) or other commands
should be used to automatically supplement the list of
printers.

${XPCONFIGDIR}/C/print/attributes/printer

The `printer' file maps printer names to model
configurations (see `model-config' below).  For example,
"mylaser" could be mapped to a "HPDJ1600C", and all other
arbitrary printers could be mapped to a default, such as
"HPLJ4SI".  When depending on lpstat(1) in the Xprinters
file, setting up defaults in `printer' becomes all the
more important.

${XPCONFIGDIR}/C/print/attributes/document

The `document' file specifies the initial document values
for any print jobs.  For example, which paper tray to
use, what default resolution, etc.

${XPCONFIGDIR}/C/print/attributes/job

The `job' file specifies the initial job values for any
print jobs.  For example, "notification-profile" can be
set so that when a print job is successfully sent to a
printer, e-mail is sent to the user.

$ fileh f-clean < /usr/share/Xprint/xserver/C/print/Xprinters
Printer xp_pdf_spooldir_tmp_Xprintjobs
Printer xp_ps_spooldir_tmp_Xprintjobs

$ fileh f-clean < /usr/share/Xprint/xserver/C/print/attributes/printer
*xp-model-identifier: PSdefault
xp_ps_spooldir_tmp_Xprintjobs.xp-model-identifier: PSspooldir
xp_pdf_spooldir_tmp_Xprintjobs.xp-model-identifier: PS2PDFspooldir-GS

$ fileh f-clean < /usr/share/Xprint/xserver/C/print/attributes/document
*content-orientation: portrait
*copy-count: 1
*default-medium: iso-a4
*default-printer-resolution: 300
PSspooldir.default-printer-resolution: 300
PS2PDFspooldir-GS.default-printer-resolution: 600
HPLJ4050-PS.default-printer-resolution: 600

$ fileh f-clean < /usr/share/Xprint/xserver/C/print/attributes/job
*notification-profile: {}