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PSF(8)											   PSF(8)

       psf - PostScript filter

       psf [ -n name ] [ -h host ] [ -w width ] [ -l length ] [ -i indent ] [ -c ]

       psf  is an lpd filter for PostScript printing.  psf interprets the name it was called with
       to determine what filters to invoke. First, if the string ``pap'' appears anywhere in  the
       name,  psf  invokes  pap  to  talk to a printer via AppleTalk. Next, if the string ``rev''
       appears, psf invokes psorder to reverse the pages of the job. Finally, if psf  was  called
       with  a filter's name as the leading string, it invokes that filter. If there is no filter
       to run, psf examines the magic number of the input, and if the input  is  not  PostScript,
       converts it to PostScript.

       In the default configuration, psf supports two kludges.	The first causes psf to check its
       name for the letter `m'.  If this letter is found and accounting is turned on,  psf  calls
       pap twice, once to get an initial page count and to print the job, and another time to get
       a final page count.  This is a work-around for bugs in a variety of PAP implementions that
       cause  printers	to  never  properly  close the PAP output file.  A notable example is any
       printer by Hewlett-Packard.

       The second kludge causes psf to examine its name for the letter `w'.  If  this  letter  is
       found  and  accounting is turned on, psf calls pap with the -w flag.  This flag causes pap
       to wait until the printer's status contains the string `idle'.  Once this string is found,
       the job is printed as normal.  This kludge is a work-around for printers, notably Hewlett-
       Packard's LaserJet IV, which will report a page count  while  a	previous  jobs	is  still

       The sample printcap entry below invokes psf to print text files, PostScript files, troff's
       C/A/T output, and TeX's DVI output, to an AppleTalk connected LaserWriter Plus. Since  the
       LaserWriter  Plus  stacks  pages  in  descending order, we reverse the pages and print the
       burst page last.

	      laser|lp|LaserWriter Plus on AppleTalk:\

       Note that if the host in question spools to more than  one  AppleTalk  printer,	/dev/null
       should  not  be	used for the lp capability. Instead, a null device should be created with
       mknod for each printer, as has been done above.

       Finally, there is a file in the	spool  directory,  /var/spool/lpd/laser,  called  .paprc,
       which pap reads for the AppleTalk name of the printer.

       psorder(1), printcap(5), lpd(8), mknod(8), pap(8).

netatalk 1.2				   17 Dec 1991					   PSF(8)
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