Section 2. The CP Command Language
The CP represent a set of interactive console functions that
are used (1) bV the operator to control the VM/370 system and (2) by a
user to control a virtual machine. In this publication, only those commanas that are used to control a virtual machine are fully Other commands are referenced only to the extent necessary
to show relationships and provide general knowledge. Privilege Classes fOi CP Commands
Each user of VM/370 is assigned one or more privilege classes as part of
the entry of the virtual machine. Each user class is
indicative of a specific function of a virtual machine and entitles the user a specific subset of the CP command language. Fiqure 3 lists each CP privilege class along with the associated type
of user ala function performed. Figure 3 also identifies the specific in which each class subset of :P commands is described in
detail. Figure 4 is a list of CP commands by privilege classes. users are functionally divided into seven classes (A through
G) with a correspondinq privilege class of CP commands, there is another
small of commands available to all users. The eighth group consists)f commands that do not belong to a privilege class because
they are used to perform certain basic functions that are required by
all virtlal machines, such as logging on, logging off, and sending
messages. These CP commands are in the Any class. This Plblication addresses itself as a reference manual for only the
class G and class Any subsets of the CP command language.
section 2. The CP Command Language 7

r ------, IClass I 1-------1 User and Function
Al The class A user controls the pi Any2 , VM/370 system. Class A is assigned to the user at the VM/370 system console during IPL. The primary system operator is responsible for the availability of the VM/370 system and its Gommunication lines and resources. In addition, the class A crser controls system accountinq, broadcast messages, virtual
machine performance options, and other command operands that
affect the overall performance of VM/370. The system
operator controls operation of the real machine using the system control panel and console device. The class A system operator who is automatically logged
on during CP initialization is designated as the primary
system operator. QEerator: The class B user controls
allocation and deallocation of all the real resources of the VM/370 system, except those controlled by the primary system
operator and spooling operator. The class C user updates certain
functions of the VM/370 system. The system programmer can modify real storage in the real machine. QEgtgtQI: The class D user controls spool data
files and specific functions of the system's unit record
equipment. !ngly§t: The class E user displays the contents of
real storage, performs the functions required to generate systems and discontiguous saved segments, and controls
the collection and recording of performance measurement data.
This class of user can display the contents of specified real storale areas on the virtual operator's console or on a
spooled virtual printer, but cannot modify real storage. The class F user obtains, and examines, in detail, certain data about input and output
devices connected to the VM/370 system. The service representative can establish intensive recording mode for one device at a time and can cause the recording of
repressable machine check errors to be initiated or resumed. Q§gr: The class G user controls functions associated
with the execution of his virtual machine. A general user
cannot display or modify real storage. The Any classification is qiven to certain CP commands that available to any user. These are primarily for the
puroose of gaining and relinquishing access to the VM/370 system. , H Reserved for IBM use. 1 ,1Described in the 12Described in this publication.
L
Fiqure 3. CP Class Descriptions
8 VM/370 CO Command Feference for Users J