"How To" Guides for various operating systems

How To Guides for UNIX: How To Guides for doing things with UNIX operating systems, including guides to the UNIX command line shells for users and UNIX System Administration for system administrators.
How To Guides for Mac OS X: How To Guides for doing things with the Mac OS X operating systems.
How To Guides for IBM z/OS: How To Guides for doing things with the IBM z/OS operating system including TSO, ISPF, CICS, the POSIX-compliant UNIX System Services, and LINUX for z/OS.
How To Guides for Windows: How To Guides for doing things with the Microsoft Windows operating system.

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