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    Command:

    lpd.conf

    
    
    

    DESCRIPTION

           The  file lpd.conf is used to provide configuration information for the
           LPRng Printer spooler system and  defaults  for  printcap  information.
           Leading  spaces  on  lines are ignored, and blank lines and lines whose
           first nonblank character is a  sharp  (''#'')  are  ignored.   Trailing
           blanks and tabs (whitespace) for an option value are deleted unless the
           last one is escaped with a backslash (''\'').  All other lines  specify
           parameters and should be of the following form:
                  keyword
                  keyword@
                  keyword#value
                  keyword=value
           Note that these values are the same format as printcap(5) values.  Val-
           ues in the configuration can contain host or machine dependent informa-
           tion;  to  assist with this, the following escape sequences in the con-
           figuration information are replaced as follows:
    
           %h     the short form of the host name (i.e.- non fully qualified).
    
           %H     the fully qualified host name.
    
           %a     the abbreviated architecture name, sun4, sol2, hpux, aix, irix5,
                  etc.   This  value  can be set using the architecture keyword in
                  the configuration file and is set to a  default  value  at  com-
                  pile_time.
    
           %P     the printer name from the printcap entry (see below).
    
           %R     the remote printer name from the printcap entry.
    
           %M     the remote host name from the printcap entry.  This is truncated
                  to the short host name.
    
           For example, on host dickory.sdsu.edu,  the  strings  short=%h  long=%H
           arch=%a   would  be  expanded  as  short=dickory  long=dickory.sdsu.edu
           arch=sun4 .
    
           The P, R, and M tags are provided for use with  combined  configuration
           and  printcap  information.   These  values  are  not expanded when the
           printcap information is initially processed, and can be used only in  a
           limited number of printcap or other entries.  Currently only the print-
           cap  :sd:  (spool  directory)  and  :forward_server:  (forward  server)
           entries use these.
    
    
    

    GENERAL CONFIGURATION PARAMETERS

           Some  of  the  following parameters take lists of files or directories.
           Unless otherwise explicitly stated, these lists  can  be  separated  by
           commas  (,), semicolons (;), or colons, (punctuation) and possibly tabs
           or spaces (whitespace) as well.
    
           Keyword names can use either underscores (_) or hyphens  (-)  in  their
                  This option specifies an environment variable whose value  is  a
                  configuration file.  Use of this is restricted to test purposes,
                  and SUID ROOT client and server will not run when  the  variable
                  is enabled.
    
           ar (default: yes)
                  See printcap(5) for details.
    
           architecture
                  The  default value is set at compile time and can be overwritten
                  with this parameter.  The default value of this parameter is set
                  at  compile  time  and  it  is  used  when expanding the special
                  sequence %a in pathname and  filename  strings  in  this  config
                  file.
    
           auth (default: NULL)
                  Authentication  type  to be used for client to server communica-
                  tion.
    
           auth_client_filter (default: NULL)
                  Program to be used for client to server communication.
    
           auth_forward (default: NULL)
                  Authentication type to be used for server to  server  communica-
                  tion.
    
           auth_forward_filter (default: NULL)
                  Program to be used for server to server communication.
    
           auth_forward_id (default: NULL)
                  Authentication id of remote server for server to server communi-
                  cation.
    
           auth_receive_filter (default: NULL)
                  Program to be used by server receive server or client communica-
                  tion.
    
           auth_server_id (default: NULL)
                  Authentication id of originating client or server.
    
           as (default: "jobstart $H $n $P $k $b $t")
                  See as.
    
           bk (default: no)
                  See printcap(5) for details.
    
           bk_filter_options
                  (default: "$P $w $l $x $y $F $c $L $i $J $C $0n $0h $-a") If the
                  "bkf" (backwards compatible filter) flags is set in the printcap
                  entry  and the original filter specification does not have a '$'
                  in it, this option string is appended to a filter specification,
                  and  the  string expanded with values from the printcap informa-
                  unless -b (binary) or -l (literal) command_line option  is  sup-
                  plied.  Note that files containing HPGL or other printer control
                  languages would often be classed as ''non_printable''.
    
           connect_grace (default: 0 seconds)
                  The time to pause before opening a new connection to a  printer.
                  This allows the printer time to recover from the previous job.
    
           connect_interval (default: 10 (seconds))
                  The  time  to  pause  after  a  failed connection or open of the
                  printing device before attempting a new connection or open.
    
           connect_timeout (default: 10 (seconds))
                  The time to wait for a device open or connection to complete.  A
                  zero value is infinite timeout.
    
           retry_nolink (default: true)
                  When  TRUE and the LPD server is printing or transferring a job,
                  then an indefinite number of attempts to connect to or open  the
                  IO device will be made.
    
           default_banner_printer (default: "")
                  The  default banner printer program to be used for printing ban-
                  ners.  This should be specified in the LPD configuration file.
    
           default_format (default: "f")
                  Default format for printing jobs.
    
           default_logger_port
                  (default: 2001) specifies  a  default  port  number  for  logger
                  information.  See logger_destination for details.
    
           default_logger_protocol
                  (default:  UDP) specifies a default protocol for logger informa-
                  tion.  See logger_destination for details.
    
           default_permission (default: ACCEPT)
                  Default permission for operations.
    
           default_printer (default: "")
                  The default printer to use if there is  no  PRINTER  environment
                  variable,  the  user has not specified a printer, or there is no
                  printcap information.
    
           default_priority (default: "A")
                  Default priority (class) for printing jobs.  This is  also  used
                  as the job class.
    
           default_remote_host (default: "%H")
                  The default remote host to use.
    
           default_tmp_dir (default: /tmp)
                  ters.  This variable is used to find shared libraries on  SunOS,
                  Solaris and Linux.
    
           filter_options
                  (default: "$C $F $H $J $L $P $Q $R $Z $a $c $d $e $f $h $i $j $k
                  $l $n $p $r $s $w $x $y $-a") If the "bkf" (backwards compatible
                  filter)  flags is not set in the printcap entry and the original
                  filter specification does not have a  '$'  in  it,  this  option
                  string  is  appended  to  a filter specification, and the string
                  expanded with values  from  the  printcap  information  and  job
                  information.   (see  of_filter_options,  filter_options, bk_fil-
                  ter_options, bk_of_filter_options)
    
           filter_path
                  (default: /bin:/usr/bin:/usr/local/bin) The value for the  envi-
                  ronment  variable  PATH, both used to find filters and passed on
                  to filters run by lpd and lpr.
    
           force_poll (default: no)
                  Some software packages put print jobs directly  into  the  spool
                  queues.   The  force_poll  flag  forces lpd to periodically poll
                  spool queues looking for jobs  and  no  server.   The  poll_time
                  variable sets the interval between polls.
    
           full_time (default: no)
                  Use full time and date format in logging and error messages.
    
           fx (default: "")
                  See  printcap(5)  for  details.   This specifies the job formats
                  allowed for this queue.
    
           group (default "daemon")
                  The group to use for file  ownership  and  process  permissions.
                  Used  only  by lpd; this can be the name of a group or a number.
                  All filters will run as the specified group.  Note that  if  the
                  group  value  is  0,  then the real user group of the process at
                  startup will be used.
    
           kerberos_keytab (default "/etc/lpd.keytab")
                  The keytab file to be used by the LPD server when using built-in
                  kerberos authentication.  The keytab file should be owned by the
                  LPD server, and be readable/writable only by it (i.e. - 600 per-
                  missions).
    
           kerberos_life (default NULL)
                  The  lifetime  of  a  Kerberos ticket.  NULL selects the default
                  lifetime.  Time should be specified using the standard  Kerberos
                  time representations.
    
           kerberos_forward_principal (default NULL)
                  remote principal used by server when forwarding
    
                  beros domain is ALPHA.COM,  then  the  kerberos  principal  name
                  would be:
                  lpr/alpha.com@ALPHA.COM.
    
           la (default: yes)
                  See printcap(5) for details.
    
           lf (default: log)
                  Name of the log file.
    
           lo (default: lock)
                  Name of the lock file.
    
           localhost
                  (default "localhost") The name of the localhost entry to be used
                  for the TCP/IP loopback interface.  The  TCP/IP  connection  may
                  originate  from the local host; use this name to check to see if
                  the local host address is in the IP address database, and use it
                  as  the origination address for local connections.  This is done
                  to avoid problems with multi-homed hosts who  originate  connec-
                  tions from different interfaces.
    
           lockfile (default: /var/spool/lpd/lpd)
                  The  file used to indicate the presence of an lpd server running
                  on the host.  The lpd_port value is  appended  to  the  lockfile
                  value  to provide a unique lockfile even when different versions
                  of LPRng are running on the same system.
    
           logger_destination
                  (default: "") This specifies a destination for  logger  informa-
                  tion generated by the lpd server.  The formation of the destina-
                  tion specification  is  host[%port][,(TCP|UDP)].   For  example,
                  localhost%2001,UDP  would  send logger information to the local-
                  host IP address, on port  2001  using  the  UPD  protocol.   The
                  default port and protocol are set by the default_logger_port and
                  default_logger_protocol configuration variables respectively.
    
           longnumber
                  (default: no) RFC1179 requires  3  digit  job  numbers;  setting
                  longnumber to yes allows 6 digit numbers.  If the backwards_com-
                  patible flag is set, only 3 digit numbers will be used.
    
           lpd_listen_port (default: =off) [ipaddr%]port
                  The port that lpd binds to.  If the parameter is set to off then
                  lpd  does  not listen to any TCP port.  See lpd_port for details
                  of the format of the argument.
    
                  If this is not set at all, then lpdP will listen on lpd_port.
    
           lpd_port (default: printer)  [ipaddr%]port
                  The port that lpr and  the  other  client  programs  send  their
                  requests  to.  The specification has the format ipaddr%port.  If
                  Put this person on the CC-list of the mail, if it is not a  suc-
                  cess  mail.  (So  in addition to the person who made the printer
                  request, also this person gets error messages,  but  no  success
                  messages.)
    
           max_status_line (default: 79)
                  An integer value specifying the numbers of characters to be used
                  for displaying simple job status;  this includes the queue posi-
                  tion, job identifier,  job contents, size, and time.  A 0 (zero)
                  value indicates no restrictions.
    
           max_status_size (default: 10 (Kbytes))
                  An integer value specifying (in K bytes) the maximum size of the
                  status  file  to  be  generated during printing operations.  A 0
                  value will create unlimited size status files.   When  the  file
                  size  exceeds  this  value, it is truncated to min_status_size K
                  bytes.
    
           mc (default: 1)
                  See printcap(5) for details.
    
           min_status_size (default: 0 (Kbytes))
                  Minimum status size.  If 0, defaults to 20 percent  of  max_sta-
                  tus_size.
    
           minfree (default: 0)
                  The  amount of free space (in Kbytes) needed in the spool direc-
                  tory in order for a job to be  accepted.   If  0,  there  is  no
                  limit; if the parameter is the name of a file rather than a num-
                  ber, the file must contain a numerical minimum  free  value  (in
                  Kbytes).   This  value  is  overridden  by the printcap mi field
                  value.
    
           ms_time_resolution
                  (default: FALSE) This flag causes the  time  information  to  be
                  printed to millisecond accuracy.  This is overkill for most pur-
                  poses.
    
           of_filter_options
                  (default: "") If this is not set, the value defaults to the same
                  as  the  filter_options  value.  This string is appended to a OF
                  filter specification, and the string expanded with  values  from
                  the  printcap  information  and  job  information.  If the "bkf"
                  (backwards compatible filter)  flags  is  set  in  the  printcap
                  entry,  of  bk_of_filter_options  value is appended instead (see
                  of_filter_options, filter_options, bk_filter_options, bk_of_fil-
                  ter_options)
    
           originate_port
                  (default:  "721  731")  A  range  of  port  numbers to originate
                  requests from.  When sending service requests, the software will
                  try  to open and bind to these ports to originate a request to a
    
           poll_time (default: 6000)
                  Interval in seconds at which LPD checks for queues with jobs and
                  no server active.  See force_poll as well.
    
           pl (default: 66)
                  See printcap(5) for details.
    
           pr (default: /bin/pr)
                  See printcap(5) for details.
    
           printcap_path
                  (default: "/etc/printcap") The location of the printcap database
                  file.   If  a  file or filter does not exist, it is considered a
                  fatal error.  All valid entries in these  files  will  be  used.
                  See PRINTCAP LOOKUP for details.
    
           perms_path
                  (default:                     /etc/lpd.perms:/usr/etc/lpd.perms:
                  /var/spool/lpd/lpd.perms.%h) The location of the printer permis-
                  sions  database.   If  a  file  or  filter does not exist, it is
                  skipped.  The first file or filter that exists and  is  readable
                  will be used.  See PERMISSIONS LOOKUP for details.
    
           pw (default: 80)
                  See printcap(5) for details.
    
           save_on_error
                  (default:  no)  Save a job in the spool queue if it has an error
                  rather than removing it.
    
           save_when_done
                  (default: no) Save a job in the  spool  queue  after  completion
                  rather than removing it.
    
           send_data_first
                  (default:  no)  Send  data files of a job first, followed by the
                  control file.
    
           send_failure_action (default: "")
                  The lpd server uses this to determine the action  to  take  when
                  unable  to print or process a job.  The keyword abort will cause
                  it to terminate operations, leaving the job in the queue, remove
                  will  cause  it  to remove the job, retry will cause it to retry
                  the job, and hold will cause it to hold the job  with  an  error
                  indication.   If  the value is a filter, then the filter will be
                  invoked and the exit status of the filter used to determine  the
                  actions.
    
           send_job_rw_timeout (default: 6000)
                  When  printing or sending a job to a remote printer, use this as
                  a write to the device or remote host timeout value.  If a  time-
                  out  occurs,  then  a FAIL status is returned and the send_fail-
                  Temporary dir for the server.
    
           spool_dir_perms (default: 042700)
                  Permissions of the spool directories.
    
           spool_file_perms (default: 0600)
                  Permissions of the spool files.
    
           syslog_device (default: /dev/console)
                  Log to this device if all else fails.
    
           unix_socket_path (default: /var/run/lprng/socket)
                  Location  of  the  Unix  socket  that  lpd  listens on and LPRng
                  clients attempt to communicate to when host is localhost. Set to
                  off to disable listening and connecting via a Unix socket.
    
           use_date (default: no)
                  No information about this parameter available.
    
           use_identifier (default: no)
                  Add  a  job  identifier  line to the control file, using the 'A'
                  entry in the control file.
    
           use_info_cache (default: yes)
                  If this is  set  to  yes,  lpd.perms  and  printcap  information
                  lookups  will be cached for later use.  Only lookups in the main
                  databases  will  be  cached,  not  lookups  in  the  per_printer
                  databases.   You can force the lpd to flush its cache and reread
                  the permissions file by sending it a SIGHUP.
    
           use_queuename (default: no)
                  Put an entry into control files identifying the spool queue  the
                  job  was  originally  sent  to.  The entry has the form 'Qspool-
                  name', and its value can be passed to filters.  This  is  useful
                  for  setting  up  a  spool queue which formats jobs in different
                  ways, depending on the name of the queue.
    
           use_shorthost (default: no)
                  By default, names of lpr job files  used  the  originating  host
                  fully qualified domain name.  This can exceed 14 characters, the
                  limit of file names on some UNIX systems.  If  this  is  set  to
                  yes,  the  non-qualified name will be used, and if the host name
                  is at most 8 characters the file name will be at most 14 charac-
                  ters long.
    
           user (default: daemon)
                  The  user that lpd and its filters runs as, and the owner of the
                  spool directories and other lpd_writable files.  This can be the
                  name  of  a  user or a number.  If the user value is 0, then the
                  real UID of the program when started will be used.  This  allows
                  a non_root user to test the functionality of the LRPng software.
    
           After having searched the various files, if a filter has been specified
           the  filter  will be started and the required printer name will be sent
           to the filter.  The output from the filter will be used as the printcap
           information.
    
    
    

    SECURITY-RELATED PARAMETERS

           Environment  variables  are sanitized by lpd and the other executables,
           in that the variables IFS, LD_PRELOAD and LD_PROFILE  are  all  deleted
           from  the  environment  passed  to filters and any other sub_processes.
           For more reliability, script filters should  set  their  own  PATH  and
           LD_LIBRARY_PATH variables.
    
           All  filters  will run as the user and group specified by the group and
           user variables.
    
    
    

    EXAMPLE

           # lpd.conf generated from  on Wed Apr  7 07:59:48 PDT 1999
    
           #   The values in this file are the default values.
           #   If you modify the file,  set the value to something other than the default
           #   For example, '# default force_localhost' means
           #     the 'force_localhost' option value is on or 1.
           #   Uncomment this and change it to read 'force_localhost@'
    
           # Purpose: always print banner, ignore lpr -h option
           #   default ab@
           # Purpose: query accounting server when connected
           #   default achk@
           # Purpose: accounting at end (see also af, la, ar, as)
           #   default ae=jobend $H $n $P $k $b $t
           # Purpose: name of accounting file (see also la, ar)
           #   default af=
           af=acct
           # Purpose: automatically hold all jobs
           #   default ah@
           ah
           # Purpose: Allow duplicate command line arguments (legacy requirement)
           #   default allow_duplicate_args@
    
    
    

    FILES

           The files used by LPRng are set by values in the printer  configuration
           file.  The following are a commonly used set of default values.
           /etc/lprng/lpd.conf                          LPRng configuration file
           ${HOME}/.printcap                            user printer description file
           /etc/printcap                                printer description file
           /etc/lprng/lpd.perms                         permissions
           /var/run/lprng/lpd                           lock file for queue control
           /var/spool/lpd                               spool directories
           /var/spool/lpd/QUEUE/control                 queue control
           /var/spool/lpd/QUEUE/log                     trace or debug log file
           /var/spool/lpd/QUEUE/acct                    accounting file
           LPRng is a enhanced printer spooler system with  functionality  similar
           to   the   Berkeley   LPR   software.    The   LPRng  mailing  list  is
           lprng@lprng.com; subscribe by sending mail  to  lprng-request@lprng.com
           with  the  word  subscribe in the body.  The software is available from
           ftp://ftp.lprng.com/pub/LPRng.
    
    
    

    AUTHOR

           Patrick Powell <papowell@lprng.com>.
    
    
    

    LPRng LPRng-3.9.0 LPD.CONF(5)

    
    
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