The syntax and parameter explanations for the DEVSERV QLIB command are explained.
For a full explanation of these commands with examples, see z/OS MVS System Commands, SA22-7627.
The DEVSER QLIB command can be used to complete these tasks:
Request a list of tape library subsystems that are defined to the host. The libraries are listed by library-id.
Request a list of devices within a library. The devices are listed by device number and the library port for each device is displayed.
Request a list of the outstanding library ...

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