Introduction to Common Useful z/OS System Commands

Like any operating system, z/OS can respond to commands issued to it during operation. Unlike commands to TSO or CICS or similar subsystems which affect only particular components, z/OS system commands, often entered through the console, can affect the operation of the entire system (and other systems to which commands are routed). A large number of system commands provide great power and flexibility to the z/OS operator. Commands are available to start and stop tasks, modify the I/O configuration, display SMS storage group and volume status, provide dumps and diagnostics, set or change subsystem options, the linklist and LPA, and much more. This month, we'll examine some of the most commonly used system commands, especially those that a system programmer or operator might rely on, their options, and situations in which they're most useful.

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