I believe TRSMAIN uses an LZ (Lempel-Ziv?) or LZW (add Welch) algorithm
of sorts, but of course the algorithm matters less than the archive format
in your case.
IBM's Unix Tools & Toys page (I believe) has GZIP ported for Unix Systems
Services. I got this to work for me:
cat "//'dataset_name'" | gzip -c > archive_name.gz
Yes that is double quotes around the double slash entity, and single
quotes around the fully-qualified dataset name, I am sure there may be
better syntax(?) but it worked.
So, if your tape data is cataloged, and you have mount authority you might
be able to issue a command like that for your tapes, sit back, and wait.
Once you're in gzip you can decompress it on a PC I'm sure.
Oh - you might have to pipe it through iconv to get it into ASCII /
Unicode before zipping it.
Tim Hare
Senior Systems Programmer
Florida Department of Transportation
(850) 414-4209
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