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From: rainwatr@ucunix.SAN.UC.EDU (Don Rainwater)
Newsgroups: comp.unix.ultrix
Subject: Restricting what goes to a printer...
Keywords: objects execs binary flag-pages
Message-ID: <61@ucunix.SAN.UC.EDU>
Date: 15 Nov 89 16:49:27 GMT
Organization: University of Cincinnati
Lines: 25


	We're having problems with people printing non-text files to our
printers.  While the filtering that lpr does is fine for cases like
'lpr a.out', it does no checking for things like 'lpr file.dat' (where
file.dat is not a text file) or 'cat a.out | lpr'.

	Is there something I can set in printcap (or elsewhere) so that
the printer will not get (most) characters outside the printable range?
I've tried 'nc=true' to eliminate control characters, but that didn't do
much (any) good.

	Also, is there a way that I can eliminate the printing of the
flag page?  I tried sb=true, but that didn't work.

	In general, is there something I have to do to make a change to
printcap effective besides making the change to printcap?  The docs say
that printcap settings are dynamic, but I'm not totally convinced.

	Thanks for any assistance.

--
Don Rainwater, Univ. of Cincinnati Computer Center
rainwatr@ucunix.san.uc.edu
rainwatr@ucbeh.san.uc.edu
rainwatr@ucbeh.bitnet