Xprt — Print server for X Version 11
Xprt [-ac] [-audit level] [-pn] [-fp fontpath] [-XpFile file] [-XpSpoolerType spoolername] [:display]
Xprt is the Xprint print server for version 11 of the X Window system for non display devices such as printers and fax machines.
Xprint is an advanced printing system which enables X11 applications to use devices like printers, FAX or create documents in formats like PostScript, PCL or PDF. It may be used by clients such as mozilla.
Xprint is a very flexible, extensible, scalable, client/server print system based on ISO 10175 (and some other specs) and the X11 rendering protocol. Using Xprint an application can search, query and use devices like printers, FAX machines or create documents in formats like PDF. In particular, an application can seek a printer, query supported attributes (like paper size, trays, fonts etc.), configure the printer device to match it's needs and print on it like on any other X device reusing parts of the code which is used for the video card Xserver.
Although Xprt may be invoked from the command line, it is preferable to run it as a daemon via the init script /etc/init.d/xprint (where this script exists).
Client programs such as mozilla will require environment variable ${XPSERVERLIST} to be set, identifying the "display" on which Xprt is running. This variable may be set for all users via /etc/profile (or similar), using /etc/init.d/xprint get_xpserverlist:
export XPSERVERLIST=`/etc/init.d/xprint get_xpserverlist`
Many of Xprt's command line options are shared in common with the usual X servers (see Xserver(1x)). Commonly used options include:
The X server runs on the given display. If multiple X servers are to run simultaneously on a host, each must have a unique display number. Note that the standard X server (for video displays) typically runs on display :0. If /etc/init.d/xprint is used to invoke Xprt, it may be configured to automatically assign an available display number.
disables host-based access control mechanisms. Enables access by any host, and permits any host to modify the access control list. Use with extreme caution. This option exists primarily for running test suites remotely.
sets the audit trail level. The default level is 1, meaning only connection rejections are reported. Level 2 additionally reports all successful connections and disconnects. Level 4 enables messages from the SECURITY extension, if present, including generation and revocation of authorizations and violations of the security policy. Level 0 turns off the audit trail. Audit lines are sent as standard error output.
sets the search path for fonts. This path is a comma separated list of directories which Xprt searches for font databases.
permits the server to continue running if it fails to establish all of its well-known sockets (connection points for clients), but establishes at least one.
Sets an alternate Xprinters file (see section FILES).
Defines the spooler system to be used for print job spooling. Supported values in xprint.mozdev.org release 009 are:
| aix |
| aix4 |
| bsd |
| osf |
| solaris |
| sysv |
| uxp |
| cups |
| lprng |
| other |
| none |
(multiple values can be specified, separated by ':', the first active spooler will be chosen). The default value is platform-specific and can be obtained via
Xprt -h
.
The following environment variables are recognized by the X print server (environment variables recognized by Xprint clients are described in Xprint(7)):
This environment variable points to the root of the Xprint server configuration directory hierarchy. If the variable is not defined, the default path is be assumed. The default path may be /usr/X11R6/lib/X11/xserver/, /usr/lib/X11/xserver/, /usr/share/Xprint/xserver/ or /usr/openwin/server/etc/XpConfig, depending on the system, and may be configured in /etc/init.d/xprint.
This environment variable selects the locale settings used by the Xprint server. Xprt allows language-specific settings (stored in ${XPCONFIGDIR}/${LANG}/print/) which will override the default settings (stored in ${XPCONFIGDIR}/C/print/). If ${LANG} is not set "C" is assumed.
`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.
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.
The `document' file specifies the initial document values for any print jobs. For example, which paper tray to use, what default resolution, etc.
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.
The `model-config' file has attributes that describe the printer model's capabilities and default settings. Printer model fonts may also be present. The model-config file also identifies the print ddx driver to be used. For each printer model supported, a complete hierarchy of files should exist. In most cases, these files do not need to be modified.
The print ddx drivers can have highly specific configuration files to control their behavior. In most cases, these files do not need to be modified.
Xprint(7), X11(7), xplsprinters(1x), xprehashprinterlist(1x), xphelloworld(1x), xpxmhelloworld(1x), xpawhelloworld(1x), xpxthelloworld(1x), xpsimplehelloworld(1x), Xserver(1x), libXp(3x), libXprintUtils(3x), libXprintAppUtils(3x), XmPrintShell(3x), XawPrintShell(3x), Xprint FAQ (http://xprint.mozdev.org/docs/Xprint_FAQ.html), Xprint main site (http://xprint.mozdev.org/)
This manual page was written by Drew Parsons <dparsons@debian.org> and Roland Mainz <roland.mainz@nrubsig.org>, with some help from the man page at http://www.sins.com.au/unix/manpages/Xprt.html and the XFree86 man page for Xserver(1).