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cups(1)                           Apple Inc.                           cups(1)


       cups - a standards-based, open source printing system


       CUPS  is the software you use to print from applications like word pro-
       cessors, email readers, photo editors, and web  browsers.  It  converts
       the  page  descriptions  produced  by your application (put a paragraph
       here, draw a line there, and so forth) into something your printer  can
       understand  and then sends the information to the printer for printing.

       Now, since every printer manufacturer does things differently, printing
       can  be very complicated.  CUPS does its best to hide this from you and
       your application so that you can concentrate on printing  and  less  on
       how  to print. Generally, the only time you need to know anything about
       your printer is when you use it for the first time, and even then  CUPS
       can often figure things out on its own.

       The  first  time  you  print to a printer, CUPS creates a queue to keep
       track of the current status of  the  printer  (everything  OK,  out  of
       paper, etc.) and any pages you have printed. Most of the time the queue
       points to a printer connected directly to your computer via a USB port,
       however  it  can  also point to a printer on your network, a printer on
       the Internet, or multiple  printers  depending  on  the  configuration.
       Regardless  of  where  the  queue  points,  it will look like any other
       printer to you and your applications.

       Every time you print something, CUPS creates a job which  contains  the
       queue  you  are  sending the print to, the name of the document you are
       printing,  and  the  page  descriptions.  Job  are  numbered  (queue-1,
       queue-2,  and  so forth) so you can monitor the job as it is printed or
       cancel it if you see a mistake. When CUPS gets a job for  printing,  it
       determines  the best programs (filters, printer drivers, port monitors,
       and backends) to convert the pages into a  printable  format  and  then
       runs them to actually print the job.

       When the print job is completely printed, CUPS removes the job from the
       queue and moves on to any other jobs you have submitted. You  can  also
       be notified when the job is finished, or if there are any errors during
       printing, in several different ways.

       The easiest way to start is by using the  web  interface  to  configure
       your  printer.  Go to "http://localhost:631" and choose the Administra-
       tion tab at the top of the page. Click/press on the Add Printer  button
       and follow the prompts.

       When  you are asked for a username and password, enter your login user-
       name and password or the "root" username and password.

       After the printer is added you will be asked to set the default printer
       options  (paper  size,  output  mode,  etc.)  for the printer. Make any
       changes as needed and then click/press on the Set Default Options  but-
       ton  to  save  them.  Some  printers  also support auto-configuration -
       click/press on the Query Printer for Default Options button  to  update
       the options automatically.

       Once  you have added the printer, you can print to it from any applica-
       tion. You can also choose Print Test Page from the maintenance menu  to
       print  a  simple  test page and verify that everything is working prop-

       You can also use the lpadmin(8) and lpinfo(8) commands to add  printers
       to  CUPS.   Additionally,  your  operating system may include graphical
       user interfaces or automatically create printer queues when you connect
       a printer to your computer.

       The CUPS web site ( provides access to the cups and
       cups-devel mailing lists, additional documentation and resources, and a
       bug report database. Most vendors also provide online discussion forums
       to ask printing questions for your operating system of choice.


       CUPS commands use the following environment variables to  override  the
       default  locations  of  files and so forth. For security reasons, these
       environment variables are ignored for setuid programs:

            Whether to allow any X.509 certificate root (Y or N).

            The directory where semi-persistent cache files can be found.

            The directory where data files can be found.

            The default  level  of  encryption  (Always,  IfRequested,  Never,

            Whether to allow expired X.509 certificates (Y or N).

            The Kerberos service name used for authentication.

            The  hostname/IP  address  and  port  number of the CUPS scheduler
            (hostname:port or ipaddress:port).

            The directory where server helper programs, filters, backend, etc.
            can be found.

            The root directory of the server.

            The directory where state files can be found.

            Specifies the name of the user for print requests.

       HOME Specifies the home directory of the current user.

            Specifies the default port number for IPP requests.

            Specifies the location of localization files.

            Specifies the default print queue (System V standard).

            Specifies the default print queue (Berkeley standard).

            Specifies the location of temporary files.




       CUPS  conforms to the Internet Printing Protocol version 2.1 and imple-
       ments the Berkeley and System V UNIX print commands.


       cancel(1), client.conf(7),  cupsctl(8),  cupsd(8),  lp(1),  lpadmin(8),
       lpinfo(8),  lpoptions(1),  lpr(1),  lprm(1),  lpq(1),  lpstat(1),  CUPS
       Online    Help    (http://localhost:631/help),    CUPS     Web     Site
       (,   PWG   Internet   Printing  Protocol  Workgroup


       Copyright (C) 2007-2014 by Apple Inc.

16 April 2014                        CUPS                              cups(1)

OS X 10.10 - Generated Thu Oct 30 06:39:32 CDT 2014
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