xf(8) [ultrix man page]

xf(8)							      System Manager's Manual							     xf(8)

Name
       xf - transparent filter

Syntax
       /usr/lib/lpdfilters/xf

Description
       The  filter  is a transparent filter. The filter simply concatenates data directly to the printer. The filter may be used with any printer.
       This filter allows device specific escape characters and control sequences to reach the printer.

       There are no command line arguments passed to the filter by and the filter does not maintain any accounting information.

       The filter should be specified in the xf field of the file.  For further information, see It is invoked when the -x option is used with the
       command to print a job. Prior to its invocation the filter specified in the of field is invoked to print the banner page upon completion it
       is stopped and the filter sends the job to the printer.

Files
See Also
       lpr(1), pr(1), printcap(5), lpd(8), MAKEDEV(8), pac(8)
       ``Line Printer Spooler Manual,'' ULTRIX Supplementary Documents, Volume 2: Programmer

																	     xf(8)

lpf(8)							      System Manager's Manual							    lpf(8)

Name
       lpf - general purpose line printer filter

Syntax
       /usr/lib/lpdfilters/lpf [-c] [-nlogin] [-hhost] [-wwidth] [-lnum] [-iindent]  [accounting file]

Description
       The  filter  handles text data destined for impact printers: LP25, LP26, LP27, LA50, LA75, LA100, LA120, LA210, LG01.  The filter regulates
       the device dependencies of the printers and performs accounting functions.  When the print job is done, writes accounting  records  to  the
       file specified by the af field in /etc/printcap.

       The  filter  can  handle  plain	ASCII  files  as well as files that have been preprocessed by nroff.  However, it ignores escape sequences
       requesting superscripting and subscripting.

       You can specify the filter in both the of and the if fields of the file.  For further information, see When you specify both fields, the of
       filter  prints the banner page only, then stops.  The if filter then gains access to the printer. The if filter maintains accounting infor-
       mation.

       If you specify the of field only, it prints the banner page then stops and restarts to maintain accounting information.

       If you specify the if field only, it sends the banner page directly to the printer.  This is not a problem for most impact printers.

       For a more detailed discussion on filters see the ``Line Printer Spooler Manual'' in the ULTRIX Supplementary Documents, Volume 2: Program-
       mer.

       The arguments passed to the filter depend on its use.  The of filter is called with the following arguments:

       lpf -wwidth -llength
	      The  width  and  length values come from the pw and pl fields in the database. The if (or restart of) filter is passed the following
	      arguments:

       lpf -c -nlogin -hhost -wwidth -lnum -iindent  accounting file

       The -c flag is optional and supplied only when control characters are to be printed; when the -l option of is used to print the	file.  The
       -w  and -l arguments are the same as for the of filter, however, they may have different values if the -w and/or -z options of were used to
       print the file.	The -n and -h arguments specify the login name and host name of the job owner. These arguments are used to record account-
       ing  information. The -i option specifies the amount of indentation to be used. The last argument is the name of the accounting file speci-
       fied from the af field in the database.

Diagnostics
       The lf field (default /dev/null) in the database specifies error logging file name.

Files
       Printer capabilities database

       See Also
	      lpr(1), pr(1), printcap(5), lpd(8), MAKEDEV(8), pac(8)
	      ``Line Printer Spooler Manual,'' ULTRIX Supplementary Documents, Volume 2: Programmer

																	    lpf(8)