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How2 ZIP different lrecl files 4transmit from mainframe 2PC?


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warren

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Joined: 30 Aug 2006
Posts: 14
Location: Tampa, Florida

PostPosted: Fri Sep 01, 2006 12:36 am
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I know nothing about zipping & unzipping files, though I have heard of the WinZip software. I was wondering if it would be easier to zip a file to compress it, before transmitting it from the mainframe to a PC. Of course the file would then be unzipped, after being successfully downloaded to the PC. Can a file even be zipped on the mainframe? If so, will it retain it's original attributes such as lrecl and blocking (eg. variable or fixed)?
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cpuhawg

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Joined: 14 Jun 2006
Posts: 331
Location: Jacksonville, FL

PostPosted: Fri Sep 01, 2006 1:07 am
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The following URL has some useful information from SUPERK about PKZIP.
You can definitely ZIP and UNZIP on the mainframe. I'm not sure about how a VB files record length header would be handled.

ibmmainframes.com/viewtopic.php?t=2857

Also, click on SEARCH to and use the search engine to display all past posts about PKZIP.
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superk

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Joined: 26 Apr 2004
Posts: 4652
Location: Raleigh, NC, USA

PostPosted: Fri Sep 01, 2006 2:18 am
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The PKZIP/MVS software does retain the dataset allocation attributes (RECFM, LRECL, BLKSIZE, etc.) within the .zip archive file, so a dataset zipped on one system can be easily unzipped on a different system without needing to know all of the details of the original dataset.
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