From Serebra Learning Corporation
OS 390 UNIX System Services Concepts Facilities 
... Shell and
Utilities, which provide commands for using OS/
390 UNIX System Services. The course covers a brief history of
UNIX, information about the OS/390 shell, the
MVS and shell environments, and customizing the shell. The terminal interface is introduced, which covers
OMVS, and asynchronous terminal interface. The course covers shell scripts and commands, including shell command options,
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OS 390 UNIX System Services Intermediate 
This course provides an in-depth examination of the OS/390 shell and OS/
390 UNIX services, including basic system administration commands and concepts. This course is designed for application programmers, system programmers, and end users working on an
MVS system and using OS/390 UNIX services for the OS/390 shell.
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OS 390 UNIX System Services Advanced 
... Shell and
Utilities, which provide commands for using OS/
390 UNIX System Services. The course covers advanced shell scripts and commands, including shell command options, and combining commands and special characters. It also covers writing shell scripts, which includes running shell scripts, using variables, parameters, and using control structures and functions. The hierarchical file systems
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