Pegasos&MorphOS/Articles/02_TurboPrint7.60/3_GfxSize.png' alt='Turboprint 2 Serial' title='Turboprint 2 Serial' />Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Easily share your publications and get. CUPS formerly an acronym for Common UNIX Printing System is a modular printing system for Unixlike computer operating systems which allows a computer to act as a. Directory of Resources for Linux Hardware Compatibility Lists and Linux Drivers Video, Audio, Network, Internet, Printer, Scanner, USB, Notebooks and more. Turboprint 2 Serial' title='Turboprint 2 Serial' />CUPS Wikipedia. CUPS formerly an acronym for Common UNIX Printing System is a modular printing system for Unix like computer operating systems which allows a computer to act as a print server. A computer running CUPS is a host that can accept print jobs from client computers, process them, and send them to the appropriate printer. CUPS consists of a print spooler and scheduler, a filter system that converts the print data to a format that the printer will understand, and a backend system that sends this data to the print device. CUPS uses the Internet Printing Protocol IPP as the basis for managing print jobs and queues. It also provides the traditional command line interfaces for the System V and Berkeley print systems, and provides support for the Berkeley print systems Line Printer Daemon protocol and limited support for the server message block SMB protocol. System administrators can configure the device drivers which CUPS supplies by editing text files in Adobes Post. Script Printer Description PPD format. The Home Users Guide to Commodore Computing U. SA 2. 95. canack ss 95. November 1985 A CWCI Publication. COMMOD0RE. TO THE RESCUE ON THE TFiAIL OF MISSING PERSONS. There are a number of user interfaces for different platforms that can configure CUPS, and it has a built in web based interface. CUPS is free software, provided under the GNU General Public License and GNU Lesser General Public License, Version 2. HistoryeditMichael Sweet, who owned Easy Software Products, started developing CUPS in 1. The original design of CUPS used the LPD protocol, but due to limitations in LPD and vendor incompatibilities, the Internet Printing Protocol IPP was chosen instead. CUPS was quickly adopted as the default printing system for most Linux distributions. In March 2. 00. 2, Apple Inc. CUPS as the printing system for Mac OS X 1. MorphOS is an AmigaOSlike computer operating system. It is a mixed proprietary and open source OS produced for the Pegasos PowerPC processor based computer, PowerUP. Introduction. Please note that most of these Brand Names are registered Trade Marks, Company Names or otherwise controlled and their inclusion in this index is. In February 2. 00. Rar Expander Powerpc here. Apple Inc. hired chief developer Michael Sweet and purchased the CUPS source code. OvervieweditCUPS provides a mechanism that allows print jobs to be sent to printers in a standard fashion. The print data goes to a scheduler7 which sends jobs to a filter system that converts the print job into a format the printer will understand. The filter system then passes the data on to a backenda special filter that sends print data to a device or network connection. The system makes extensive use of Post. Script and rasterization of data to convert the data into a format suitable for the destination printer. CUPS offers a standard and modularised printing system that can process numerous data formats on the print server. Before CUPS, it was difficult to find a standard printer management system that would accommodate the very wide variety of printers on the market using their own printer languages and formats. For instance, the System V and Berkeley printing systems were largely incompatible with each other, and they required complicated scripts and workarounds to convert the programs data format to a printable format. They often could not detect the file format that was being sent to the printer and thus could not automatically and correctly convert the data stream. Additionally, data conversion was performed on individual workstations rather than a central server. CUPS allows printer manufacturers and printer driver developers to more easily create drivers that work natively on the print server. Processing occurs on the server, allowing for easier network based printing than with other Unix printing systems. With Samba installed, users can address printers on remote Windows computers, and generic Post. Script drivers can be used for printing across the network. SchedulereditThe CUPS scheduler implements Internet Printing Protocol IPP over HTTP1. A helper application cups lpd converts Line Printer Daemon protocol LPD requests to IPP. The scheduler also provides a web based interface for managing print jobs, the configuration of the server, and for documentation about CUPS itself. An authorization module controls which IPP and HTTP messages can pass through the system. Once the IPPHTTP packets are authorized they are sent to the client module, which listens for and processes incoming connections. The client module is also responsible for executing external CGI programs as needed to support web based printers, classes, and job status monitoring and administration. Once this module has processed its requests, it sends them to the IPP module which performs Uniform Resource Identifier URI validation to prevent a client from sidestepping any access controls or authentication on the HTTP server. The URI is a text string that indicates a name or address that can be used to refer to an abstract or physical resource on a network. The scheduler allows for classes of printers. Applications can send requests to groups of printers in a class, allowing the scheduler to direct the job to the first available printer in that class. A jobs module manages print jobs, sending them to the filter and backend processes for final conversion and printing, and monitoring the status messages from those processes. The CUPS scheduler utilizes a configuration module, which parses configuration files, initializes CUPS data structures, and starts and stops the CUPS program. The configuration module will stop CUPS services during configuration file processing and then restart the service when processing is complete. A logging module handles the logging of scheduler events for access, error, and page log files. The main module handles timeouts and dispatch of IO requests for client connections, watching for signals, handling child process errors and exits, and reloading the server configuration files as needed. Other modules used by the scheduler include the MIME module, which handles a Multipurpose Internet Mail Extensions MIME type and conversion database used in the filtering process that converts print data to a format suitable for a print device 1. PPD module that handles a list of Postscript Printer Description PPD files 1. PPDs within CUPS. Filter systemedit. CUPS allows users to send different data to the CUPS server and have that data converted into a format the printer will understand and be able to print. CUPS can process a variety of data formats on the print server. It converts the print job data into the final languageformat of the printer via a series of filters. It uses MIME types for identifying file formats. MIME databaseseditAfter the CUPS system has assigned the print job to the scheduler, it is passed to the CUPS filter system. This converts the data to a format suitable for the printer. During start up, the CUPS daemon loads two MIME databases mime. CUPS can accept data for, and mime. MIME type. 2. 3The mime. For example, to detect an HTML file, the following entry would be applicable texthtml html htm printable0,1. HTML string0,lt DOCTYPEThe second line matches the file contents to the specified MIME type by determining that the first kilobyte of text in the file holds printable characters and that those characters include html markup. If the pattern above matches, then the filter system would mark the file as the MIME type texthtml. The mime. convs file has the syntax source destination cost program. The source field designates the MIME type that is determined by looking up the mime. This is also retrieved from mime. The cost field assists in the selection of sets of filters when converting a file. The last field, program, determines which filter program to use to perform the data conversion. Some examples. textplain applicationpostscript 5. Filtering processeditThe filtering process works by taking input data pre formatted with six arguments the job ID of the print jobthe user namethe job namethe number of copies to printany print optionsthe filename though this is unnecessary if it has been redirected from standard input.