[AppyPappy]

Our new mainframe will be a Linux boxen. I hope my JCL runs on it.

[Bidimus1]

As long as DistroWatch exists Linux will continue to be a Back Room / Infrastructure tool and a Hobbyist desktop.

Nothing wrong with that of course.

[gcraig]

We run z/OS with zLinux guest images. The JCL runs on z/OS and the zLinux guests run apache and WebSphere, etc.

[taxcontrol]

http://www.tutorialspoint.com/jcl/jcl_environment_setup.htm

You will want to check out Hercules http://www.hercules-390.eu/

[Bidimus1]

As long as DistroWatch exists Linux will continue to be a Back Room / Infrastructure tool and a Hobbyist desktop.

Nothing wrong with that of course.