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ABCs of z/OS System Programming: Volume 9 by Richard Conway, Paul Rogers

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Products and components
This chapter provides a brief overview of z/OS UNIX System Services (z/OS UNIX) and related components. z/OS UNIX interacts with the following elements and features of z/OS:
BCP (WLM and SMF components)
XPG4-compliant shell application
Data Facility Storage Management Subsystem (DFSMS) (HFS is a component of DFSMS)
Security Server RACF
Resource Measurement Facility (RMF)
Time Sharing Option/Extended (TSO/E)
z/OS Communications Server (TCP/IP)
System Modification Program Extended (SMP/E)
Virtual Lookaside Facility ...

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