From Serebra Learning Corporation
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 
...390 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
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