NAME

       papd - AppleTalk print server daemon

SYNOPSIS

       papd [-d] [-f configfile] [-p printcap] [-P pidfile]

       papd [-v | -V]

DESCRIPTION

       papd is the AppleTalk printer daemon. This daemon accepts print jobs from AppleTalk
       clients (typically Macintosh computers) using the Printer Access Protocol (PAP). When used
       with System V printing systems, papd spools jobs directly into an lpd(8) spool directory
       and wakes up lpd after accepting a job from the network to have it re-examine the
       appropriate spool directory. The actual printing and spooling is handled entirely by lpd.

       papd can also pipe the print job to an external program for processing, and this is the
       preferred method on systems not using CUPS to avoid compatibility problems with all the
       flavours of lpd in use.

       As of Netatalk 2.0, CUPS is also supported. Simply using cupsautoadd as the first
       papd.conf entry will share all CUPS printers automagically. It is still possible to
       overwrite these defaults by individually defining printer shares. See papd.conf(5) for
       details on the configuration file format.

       papd is typically started at boot time from system init scripts or services. It first
       reads from its configuration file, papd.conf.

       If no configuration file is given, the hostname of the machine is used as the NBP name,
       and all options take their default value.

OPTIONS

       -d
           Do not fork or disassociate from the terminal.

       -f configfile
           Consult configfile instead of papd.conf for the configuration information.

       -p printcap
           Consult printcap instead of /etc/printcap for LPD configuration information.

       -P pidfile
           Specifies the file in which papd stores its process id.

       -v | -V
           Print version information and exit.

NOTES

       PSSP (Print Server Security Protocol) is an authentication protocol carried out through
       postscript printer queries to the print server. Using PSSP requires LaserWriter 8.6.1 or
       greater on the client Mac. The user will be prompted to enter their username and password
       before they print. It may be necessary to re-setup the printer on each client the first
       time PSSP is enabled, so that the client can figure out that authentication is required to
       print. You can enable PSSP on a per-printer basis. PSSP is the recommended method of
       authenticating printers as it is more robust than CAP-style authentication, described
       below.

       CAP-style authentication gets its name from the method CAP (Columbia AppleTalk Package)
       used to authenticate its Mac clients' printing. This method requires that a user login to
       a file share before they print.  afpd records the username in a temporary file named after
       the client's AppleTalk address, and it deletes the temporary file when the user
       disconnects. Therefore CAP style authentication will not work for clients connected to
       afpd via TCP/IP.  papd gets the username from the file with the same AppleTalk address as
       the machine connecting to it. CAP-style authentication will work with any Mac client. If
       both CAP and PSSP are enabled for a particular printer, CAP will be tried first, then papd
       will fall back to PSSP.

       The list of UAMs to use for authentication (specified with the 'am' option) applies to all
       printers. It is not possible to define different authentication methods on each printer.
       You can specify the list of UAMS multiple times, but only the last setting will be used.
       Currently, uams_guest.so and uams_clrtxt.so are supported as printer authentication
       methods. The guest method requires a valid username, but not a password. The Cleartext UAM
       requires both a valid username and the correct password.

           Note
           Print authentication is only supported on Mac OS 9 and earlier.

FILES

       papd.conf
           Default configuration file.

       /etc/printcap
           Printer capabilities database.

       .ppd
           PostScript Printer Description file. papd answers configuration and font queries from
           printing clients by consulting the configured PPD file. Such files are available from
           Adobe, Inc., or from the printer's manufacturer. If no PPD file is configured, papd
           will return the default answer, possibly causing the client to send excessively large
           jobs.

CAVEATS

       papd accepts characters with the high bit set (a full 8-bits) from the clients, but some
       PostScript printers (including Apple's LaserWriter family) only accept 7-bit characters on
       their serial interface by default. The same applies for some printers when they're
       accessed via TCP/IP methods (remote LPR or socket). You will need to configure your
       printer to accept a full 8 bits or take special precautions and convert the printjob's
       encoding (e.g. by using co="protocol=BCP" when using CUPS 1.1.19 or above).

       When printing clients run Mac OS X 10.2 or later, take care that PPDs do not make use of
       *cupsFilter: comments unless the appropriate filters are installed at the client's side,
       too.

SEE ALSO

       lp1,lpr(1),lprm(1),printcap(5),lpc(8),lpd(8),papd.conf(8).

AUTHOR

       See CONTRIBUTORS[1]

NOTES

        1. CONTRIBUTORS
           https://netatalk.io/contributors