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

NAME

       psf - PostScript filter

SYNOPSIS

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

DESCRIPTION

       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  Post-
       Script.

KLUDGE

       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 printing.

EXAMPLE

       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:
		  :sd=/usr/spool/lpd/laser:
		  :lp=/usr/spool/lpd/laser/null:
		  :lf=/var/adm/lpd-errs:pw#80:hl:
		  :of=/usr/lib/filters/ofpap:
		  :if=/usr/lib/filters/ifpaprev:
		  :tf=/usr/lib/filters/tfpaprev:
		  :df=/usr/lib/filters/dfpaprev:

       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.

SEE ALSO

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

netatalk 1.2							    17 Dec 1991 							    PSF(8)