What/Where is gunzip ??

"Steve Maybo" <STEVE@ris.risinc.com>
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Date: Thu, 14 Apr 1994 23:41:32 --100
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From: "Steve Maybo" <STEVE@ris.risinc.com>
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Subject: What/Where is gunzip ??
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All Mosaic binaries on ncsa are .gz ...... this compression extension 
isn't listed in their README file about file compressions used on the 
host.

Where can I get the gunzip utility..... It doesn't come with Solaris 2.x. 
didn't they use .z or .Z compression ??

Steve