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https://github.com/OpenPrinting/cups

OpenPrinting CUPS Sources
https://github.com/OpenPrinting/cups

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OpenPrinting CUPS Sources

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README 

        
OpenPrinting CUPS v2.5b1

========================



![Version](https://img.shields.io/github/v/release/openprinting/cups?include_prereleases)

![Apache 2.0](https://img.shields.io/github/license/openprinting/cups)

[![Build and Test](https://github.com/OpenPrinting/cups/workflows/Build%20and%20Test/badge.svg)](https://github.com/OpenPrinting/cups/actions/workflows/build.yml)

[![Coverity Scan](https://img.shields.io/coverity/scan/23806)](https://scan.coverity.com/projects/openprinting-cups)



> *Note:* This branch is tracking a future CUPS 2.5.x feature release.  Check

> out the "2.4.x" branch for CUPS 2.4.x.



Introduction

------------



OpenPrinting CUPS is the most current version of CUPS, a standards-based, open

source printing system for Linux® and other Unix®-like operating systems.  CUPS

supports printing to:



- [AirPrint™][1] and [IPP Everywhere™][2] printers,

- Network and local (USB) printers with Printer Applications, and

- Network and local (USB) printers with (legacy) PPD-based printer drivers.



CUPS provides the System V ("lp") and Berkeley ("lpr") command-line interfaces,

a configurable web interface, a C API, and common print filters, drivers, and

backends for printing.  The [cups-filters][3] project provides additional

filters and drivers.



CUPS is licensed under the Apache License Version 2.0 with an exception to allow

linking against GNU GPL2-only software.  See the files `LICENSE` and `NOTICE`

for more information.



> Note: Apple maintains a separate repository for the CUPS that ships with macOS

> and iOS at .



[1]: https://support.apple.com/en-us/HT201311

[2]: https://www.pwg.org/printers

[3]: https://github.com/openprinting/cups-filters



Reading the Documentation

-------------------------



Initial documentation to get you started is provided in the root directory of

the CUPS sources:



- `CHANGES.md`: A list of changes in the current major release of CUPS.

- `CONTRIBUTING.md`: Guidelines for contributing to the CUPS project.

- `CREDITS.md`: A list of past contributors to the CUPS project.

- `DEVELOPING.md`: Guidelines for developing code for the CUPS project.

- `INSTALL.md`: Instructions for building and installing CUPS.

- `LICENSE`: The CUPS license agreement (Apache 2.0).

- `NOTICE`: Copyright notices and exceptions to the CUPS license agreement.

- `README.md`: This file.

- `REPORTING_ISSUES.md`: Instructions what information to provide when reporting an issue.



Once you have installed the software you can access the documentation (and a

bunch of other stuff) online at  and using the `man`

command, for example `man cups`.



If you're having trouble getting that far, the documentation is located under

the `doc/help` and `man` directories.



*Please read the documentation before asking questions.*



Setting Up Printers

-------------------



CUPS includes a web-based administration tool that allows you to manage

printers, classes, and jobs on your server.  Open 

in your browser to access the printer administration tools.  You will be asked

for the administration password (root or any other user in the "sys", "system",

"root", "admin", or "lpadmin" group on your system) when performing any

administrative function.



The `lpadmin` command is used to manage printers from the command-line.  For

example, the following command creates a print queue called "myprinter" for an

IPP Everywhere printer at address "11.22.33.44":



    lpadmin -p myprinter -E -v "ipp://11.22.33.44/ipp/print" -m everywhere



The `-p` option specifies the printer name.  The `-E` option enables the printer

and accepts new print jobs immediately.  The `-v` option specifies the *device

URI* for the printer, which tells CUPS how to communicate with the printer.  And

the `-m` option specifies the model (driver) to use, in this case the IPP

Everywhere ("everywhere") driver that is used for AirPrint and IPP Everywhere

printers as well as shared printers and printers supported through Printer

Applications.



Legacy printers are supported using PPD (PostScript Printer Description) files

that describe printer capabilities and driver programs needed for each printer.

CUPS includes several sample PPD files for common legacy printers:



   Driver                       | PPD Name

   -----------------------------|------------------------------

   Dymo Label Printers          | drv:///sample.drv/dymo.ppd

   Intellitech Intellibar       | drv:///sample.drv/intelbar.ppd

   EPSON 9-pin Series           | drv:///sample.drv/epson9.ppd

   EPSON 24-pin Series          | drv:///sample.drv/epson24.ppd

   Generic PCL Laser Printer    | drv:///sample.drv/generpcl.ppd

   Generic PostScript Printer   | drv:///sample.drv/generic.ppd

   HP DeskJet Series            | drv:///sample.drv/deskjet.ppd

   HP LaserJet Series           | drv:///sample.drv/laserjet.ppd

   OKIDATA 9-Pin Series         | drv:///sample.drv/okidata9.ppd

   OKIDATA 24-Pin Series        | drv:///sample.drv/okidat24.ppd

   Zebra CPCL Label Printer     | drv:///sample.drv/zebracpl.ppd

   Zebra EPL1 Label Printer     | drv:///sample.drv/zebraep1.ppd

   Zebra EPL2 Label Printer     | drv:///sample.drv/zebraep2.ppd

   Zebra ZPL Label Printer      | drv:///sample.drv/zebra.ppd



The sample drivers provide basic printing capabilities, but generally do not

exercise the full potential of the printers or CUPS.  Other drivers provide

greater printing capabilities.



You can run the `lpinfo -m` command to list all of the available drivers:



    lpinfo -m



Similarly, the `lpinfo -v` command lists the available printers and their device

URIs:



    lpinfo -v



Once you know the device URI and driver name, add the printer using the

`lpadmin` command:



    lpadmin -p PRINTER-NAME -E -v "DEVICE-URI" -m DRIVER-NAME



Printing Files

--------------



CUPS provides both the System V `lp` and Berkeley `lpr` commands for printing:



    lp FILENAME

    lpr FILENAME



Both the `lp` and `lpr` commands support printing options:



    lp -o media=A4 -o resolution=600dpi FILENAME

    lpr -o media=A4 -o resolution=600dpi FILENAME



CUPS recognizes many types of images files as well as PDF, PostScript, and text

files, so you can print those files directly rather than through an application.



If you have an application that generates output specifically for your printer

then you need to use the `-oraw` or `-l` options:



    lp -o raw FILENAME

    lpr -l FILENAME



This will prevent the filters from misinterpreting your print file.



Contributing Code and Translations

----------------------------------



Code contributions should be submitted as pull requests on the Github site:



    http://github.com/OpenPrinting/cups/pulls



See the file "CONTRIBUTING.md" for more details.



PAPPL uses [Weblate][WL] to manage the localization of the web interface,

command-line programs, and common IPP attributes and values, and those likewise

end up as pull requests on Github.



[WL]: https://hosted.weblate.org



Legal Stuff

-----------



Copyright © 2020-2023 by OpenPrinting



Copyright © 2007-2020 by Apple Inc.



Copyright © 1997-2007 by Easy Software Products.



CUPS is provided under the terms of the Apache License, Version 2.0 with

exceptions for GPL2/LGPL2 software.  A copy of this license can be found in the

file `LICENSE`.  Additional legal information is provided in the file `NOTICE`.



Unless required by applicable law or agreed to in writing, software distributed

under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR

CONDITIONS OF ANY KIND, either express or implied.  See the License for the

specific language governing permissions and limitations under the License.