A couple of references to look at:
<a href=”http://forums.systeminetwork.com/isnetforums/showthread.php?t=44602″> Systemi Network</a> and <a href=”http://www.code400.com/forum/showthread.php?t=4602″> Code400.com</a>
You can use the Java JAR command through QSHELL
There is an open source package that runs in the PASE environment
PKWare has a commercial product
There are probably other methods.
I don’t know if any of these give you any better compression than what is built in to the O/S.
I have used the JAR command through QSHELL – That Code400 link has an example of the code to use.
We use software from Pkware.