Subject: Problems in Zmodem file transfers

18. *****
 Q: How to make Zmodem transfer between a Unix mainframe and my PC?

 A: You naturally need the Zmodem programs both for your PC and your
Unix host. If you don't have them, the PC Zmodem transfer program
can be found as
 112016 Jun 7 1995 ftp://garbo.uwasa.fi/pc/termutil/gsz0607.zip
 gsz0607.zip X/Y/ZMODEM driver with graphic file xfer display
(or whatever is the current version). For the Unix end of things get
ftp://garbo.uwasa.fi/unix/zmodem/rzsz3_36.zip. The /unix/zmodem/
rzszmake.inf file explains how to install the Unix facilities.
Unpacking the PC facilities is standard knowledge, so no more about
that.
   To the the transfers going at the PC end of things you'll find
some additional, useful the information in /pc/termutil/
zdoc0814.zip, /pc/ts/tskerm26.zip (zset.cmd in particular), and also
/pc/ts/tspfon29.zip (pcpqa.txt in there). These latter two packages
concern primarily MsKermit and Procomm, but the Zmodem ideas in them
are general.
   1) To send an ascii file from your PC to your Unix host you might
use at your Unix end just
  rz
and then at your PC
  gsz port 1 est 0 9600 sz -r -a FileName
This would send the file from your PC at 9600 bauds through port 1
using crash recovery and ascii file transfer.
   2) To go the other way, for example to send a ascii file from
your Unix host to your PC you would first write at your Unix host
  sz FileName
and then at your PC
  gsz port 1 est 0 9600 rz -y -a r:\
This would send the file from your Unix host using ascii transfer,
overwriting, and directory r:\ as the destination.
   3) To send a binary file with crash recovery from Unix to PC use
  sz FileName
  gsz port 1 est 0 9600 rz -r r:\
   It is very difficult to give advice that is generally applicable
because there are so many alternatives. One has to rely heavily on
experimentation on each different configuration. Prepare a
systematical test pattern to go through the all the potential
parities, 7/8 bits, and server parameters (if you are running
through a server). Such a structured approach has most often (but
not always) solved these problems.
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