Introduction to z/OS UNIX System Services

Mainframe environments are the backbone of global enterprise computing, and understanding how they interface with UNIX is a critical skill for modern systems administrators and developers. This text-only course introduces you to z/OS UNIX System Services, bridging the gap between traditional mainframe concepts and open-systems environments. By completing this course, you will gain the confidence to navigate the hierarchical file system, execute shell commands, and run scripts directly on a mainframe. What you'll learn: Understand the architecture and foundational concepts of UNIX System Services on z/OS; Navigate the hierarchical file system using standard shell commands; Manage files, directories, and access permissions safely within the mainframe environment; Configure and customize your shell environment for modern development workflows; Write and execute basic shell scripts to automate routine system tasks; Interact with UNIX System Services using modern secure connectivity tools. This course begins with core terminology and architectural overviews before guiding you through practical command-line operations, file system management, and scripting techniques. It is designed specifically for beginners, system operators, and application developers new to the mainframe space, requiring no prior mainframe or UNIX experience. Start reading today to unlock the power of UNIX on enterprise mainframes.