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GNU/Linux |
CentOS 4.8 |
i386 |
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backend(1) |
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backend − cups backend transmission interfaces
backend job user title num-copies options [ filename ]
The CUPS backend interface provides a standard method for sending document files to different physical interfaces.
Backends must be capable of reading from a filename on the command-line or from the standard input, copying the standard input to a temporary file if required by the physical interface.
The command name (argv[0]) is set to the device URI of the destination printer.
The following
environment variables are defined by the CUPS server when
executing the backend:
CHARSET
The default text character set (typically us-ascii or iso-8859-1).
CLASS
When a job is submitted to a printer class, contains the name of the destination printer class. Otherwise this environment variable will not be set.
CONTENT_TYPE
The MIME type associated with the file (e.g. application/postscript).
CUPS_DATADIR
The directory where data files can be found.
CUPS_SERVERROOT
The root directory of the server.
DEVICE_URI
The device-uri associated with the printer; this is provided for shell scripts which may not be able to get the passed argv[0] string.
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LANG |
The default language locale (typically C or en). | ||
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PATH |
The standard execution path for external programs that may be run by the backend. | ||
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PPD |
The full pathname of the PostScript Printer Description (PPD) file for this printer. |
PRINTER
The name of the printer.
RIP_CACHE
The recommended amount of memory to use for Raster Image Processors (RIPs).
SOFTWARE
The name and version number of the server (typically CUPS/1.1).
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TZ |
The timezone of the server. | ||
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USER |
The user executing the backend, typically root; consult the cupsd.conf file for the current setting. |
cupsd(8), filter(1) CUPS Interface Design Description, CUPS Software Administrators Manual, CUPS Software Programmers Manual, http://localhost:631/documentation.html
Copyright 1993-2004 by Easy Software Products, All Rights Reserved.
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backend(1) | |