Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!garnett
From: garnett@cs.utexas.edu (John William Garnett)
Newsgroups: comp.sys.next
Subject: zmodem sz and rz
Summary: how can I use sz and rz?
Keywords: file transfer zmodem sz rz
Message-ID: <82@ar-rimal.cs.utexas.edu>
Date: 18 Nov 90 23:53:36 GMT
Organization: UT at Austin, Dept. of CS
Lines: 34

I just obtained the zmodem programs sz and rz from sonata.cc.purdue.edu
and now I have a few questions.  First some background:  I've used
sz and rz before using a PC (dos) machine as the local machine and
a UNIX(tm) machine as the remote machine.  This worked fine since
I could use add zmodem as an external file transfer protocol on the
DOS side.  After executing sz on the UNIX(tm) side, I could escape
back to the local machine (DOS) and execute rz.  This appears to be
much the same way the kermit works between two UNIX(tm) machines
(i.e. issue a "kermit -s filename" on the remote side, type control-/C
to escape to the local side and type "receive").

Given all this, I wish to use the same technique to transfer files
between my NeXT and another UNIX(tm) machine using the zmodem protocol.
I've tried using tip and sz/rz together with the ~| or ~$ options but these
options don't appear to work (at least under NeXT 1.0 they don't).  I think
they don't work because tip is setuid to root and the ~| option
involves executing a shell (this would be a security hole, yes?).

So I guess my question is: what is the NeXT equivalent of Procomm as
used in the scenario in my first paragraph?  (I also tried using Pcomm
as available in the comp.sources.unix archives but it is a System V
specific program - it uses the termio ioctls).

I'd really like to use zmodem because it is MUCH faster than kermit in
my experience.

Thanks...


-- 
John Garnett
                              University of Texas at Austin
garnett@cs.utexas.edu         Department of Computer Science
                              Austin, Texas