From: dcd@TC.FLUKE.COM (David Dyck) Subject: Re: using cat on binary files (CTRL-Z trauma) 19 Oct 1996 22:41:20 -0700 Sender: daemon@cygnus.com Approved: cygnus.gnu-win32@cygnus.com Distribution: cygnus Message-ID: <96Oct19.215011pdt.36050.cygnus.gnu-win32@gateway.fluke.com> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Content-Transfer-Encoding: QUOTED-PRINTABLE X-Sender: dcd@jd Original-To: root Original-cc: John Cook , gnu-win32@cygnus.com In-Reply-To: Original-Sender: owner-gnu-win32@cygnus.com I know from experience, that MSDOS (>3.X, probably 5.x) still look at ctrl-z in certain cases. I had a graphics screen dump program that failed every now and the (it turned out to be when a ctrl-z) was send in the binary graphics data to the printer. I added a test to change each ctrl-z by a bit, and the LPT/PRN driver started passing the data to the printer again, and the screen dumps started working. There may be other cases also like this. David Dyck PS. I tried several ways to set the printer to binary mode, but I never got my program to do it. If I printed to a file, and used COPY/B myfile.tmp LPT1: then the ctrl-z would be passed to the printer correctly, I just couldn't duplicate it in my own program. (the /B flag to copy means copy in binary mode) On Fri, 18 Oct 1996, root wrote: > Date: Fri, 18 Oct 1996 22:55:31 -0700 > From: root > To: John Cook > Cc: gnu-win32@cygnus.com > Subject: Re: using cat on binary files (CTRL-Z trauma) > > > > > > > > > When I try to cat a binary file, cat bails upon receiving > > the first CTRL-Z byte. CTRL-Z is the DOS end-of-file character > > (right?) > > Wrong! > DOS doesn't use the Ctrl-Z character since (at least) DOS 3.X > i.e. several centuries ago in this rap=EEdly moving field! We are > now in DOS Windows NT style, quite a change since > C:> > > > > -- > Jacob Navia=09Logiciels/Informatique > 41 rue Maurice Ravel=09=09=09Tel (1) 48.23.51.44 > 93430 Villetaneuse =09=09=09Fax (1) 48.23.95.39 > France > - > For help on using this list, send a message to > "gnu-win32-request@cygnus.com" with one line of text: "help". > - For help on using this list, send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".