McKown, John wrote:
> Is there any documentation on the compression algorithm used by TRSMAIN?
The terse algorithm is explained in IBM's US patent 4814746 from 1989,
easily viewable at http://www.google.com/patents?vid=USPAT4814746 . The
patent contains a PL/I program that is claimed to implement
<- snip ->
> 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.
Thanks for the idea. It may be easier than trying to reverse engineer
TRSMAIN. Assuming that I had the talent to d
On Wed, 31 Jan 2007 08:09:17 -0600, McKown, John
<[EMAIL PROTECTED]> wrote:
>
>The reason to compress on the mainframe was to reduce the time needed to
>ftp. Trying to ftp 21 MEDIA2 tapes (3490E) worth of data to my PC (over
>100Mb ethernet) scares me.
Actually it's probably not that bad. I le
In a recent note, Tim Hare said:
> Date: Wed, 31 Jan 2007 09:49:31 -0500
>
> 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 q
> -Original Message-
> From: IBM Mainframe Discussion List
> [mailto:[EMAIL PROTECTED] On Behalf Of Tim Hare
> Sent: Wednesday, January 31, 2007 8:50 AM
> To: IBM-MAIN@BAMA.UA.EDU
> Subject: Re: TRSMAIN question
>
>
> I believe TRSMAIN uses an LZ (Lempel
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
> -Original Message-
> From: IBM Mainframe Discussion List
> [mailto:[EMAIL PROTECTED] On Behalf Of Dave Cartwright
> Sent: Wednesday, January 31, 2007 3:36 AM
> To: IBM-MAIN@BAMA.UA.EDU
> Subject: Re: TRSMAIN question
>
>
> On Tue, 30 Jan 2007 15:35:07 -06
On Tue, 30 Jan 2007 15:35:07 -0600, McKown, John
<[EMAIL PROTECTED]> wrote:
>>And is there anyway to ftp that to an ASCII based server and uncompress
>it? Yes - this relates to my previous question about RACF IRRADU00
>reformatted records.
>
John,
I suggest you convert the tapes to AWS, ftp to a
1. We create both Windows Zipped and z/OS Tersed distribution files for
MXG Software, which is a single sequential pure text file, currently
2,119,181 lines of text; the lines are FB 80 on z/OS, but are not
numbered, so the file is smaller as a variable-length ASCII file.
Our current vers
In a recent note, McKown, John said:
> Date: Tue, 30 Jan 2007 15:35:07 -0600
>
> Is there any documentation on the compression algorithm used by TRSMAIN?
> Or how effective it is? I.e. if I have 21 MEDIA2 (3490E) tapes worth of
> printable data, can I estimate how many compressed tapes th
Is there any documentation on the compression algorithm used by TRSMAIN?
Or how effective it is? I.e. if I have 21 MEDIA2 (3490E) tapes worth of
printable data, can I estimate how many compressed tapes that will take?
And is there anyway to ftp that to an ASCII based server and uncompress
it? Yes -
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