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000064_news@columbia.edu _Thu Aug 26 18:19:11 1999.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Subject: Re: C-Kermit hangs.
Date: 26 Aug 1999 21:59:25 GMT
Organization: Columbia University
Message-ID: <7q4dbt$fra$1@newsmaster.cc.columbia.edu>
To: kermit.misc@columbia.edu
In article <37C5B4C8.49147424@ix.netcom.com>,
yisroel <yisroel@ix.netcom.com> wrote:
: I'm running the newest beta and older version of C-Kermit for Red Hat
: Linux 6.0 and here is the problem I have:
:
: I'm doing a system call from a Perl script to run a kermit script. At
: some point of Kermit script execution kermit process or sz call would
: hang. As soon as I try to strace my kermit process it would come alive.
:
The best technique is to decompose your procedure into its parts to
isolate the part that is giving you trouble. Begin by removing Perl
and your Kermit script from the picture.
Can you make a connection with C-Kermit by hand and then transfer files
over it with sz? If it doesn't work by hand, it won't work in your
script. Note that using sz as an external protocol over a connection
you have made with Kermit will work only if you have a version of sz
that uses stdio for file transfer. Versions of sz produced since
about 1988 do NOT use stdio for this, and therefore C-Kermit can not
redirect them over the communications connection. For further info,
see item 38 of the Kermit FAQ:
http://www.columbia.edu/kermit/faq.html
and/or read Chapter 14 of "Using C-Kermit" about external protocols.
- Frank