FWIW, the low level zip API is available in the z/OS Java SDK (and all JDKs).
JZOS includes sample classes that zips z/OS datasets. Writing an unzip wouldn't be too hard. https://www.ibm.com/docs/api/v1/content/SSYKE2_8.0.0/com.ibm.java.zsecurity.api.80.doc/com.ibm.jzos/com/ibm/jzos/sample/ZipDatasets.html Kirk Wolf Dovetailed Technologies PS> JZOS automatically takes advantage of both zIIP engines and zEDC. On Thu, Mar 23, 2023, at 10:48 PM, Mike Hochee wrote: > http://www.info-zip.org is a good bet. Whatever product/freeware you choose > it needs to more or less conform to this format... > https://pkware.cachefly.net/webdocs/APPNOTE/APPNOTE-6.2.0.txt > > -----Original Message----- > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of > MARTIN, MIKE > Sent: Thursday, March 23, 2023 10:33 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Unzip on z/OS ? > > Caution! This message was sent from outside your organization. > > Hi all, > > (This seems like one of those easy answers to find, but I'm not having much > luck) > > We have z/OS 2.4 and we are wondering if we can unzip an ASCII file that was > zipped on the Windows platform. > > I've seen references to gzip, Ported Tools, 3rd party software. What are > our options for unzipping a file with the z/OS 2.4? > > Mike Martin > > This email may contain confidential and privileged material for the sole use > of the intended recipient. If you are not the intended recipient, please > contact the sender and delete all copies. Any review or distribution by > others is strictly prohibited. Personal emails are restricted by policy of > the State Employees' Credit Union (SECU). Therefore SECU specifically > disclaims any responsibility or liability for any personal information or > opinions of the author expressed in this email. > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, send email to > lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
