THE CLASS G C8MMANDS Commands in the general user class enable the user to control the
operation of a virtual machine through using its virtual operator's
console device much as a real machine is controlled through its system
control For example, commands are included in the general user class that
enable the user to perform the following operations: load an operating
system (IPL command); start or restart program execution in the virtual
machine (BEGIN command); stop virtual machine execution at a specified
virtual storage address (ADSTOP command); reset and restart the virtual
machine RESET and SYSTEM RESTART commands); store and display
data contained in virtual storage, registers (general, floating-point,
and control), and status words such as the PSW (STORE and DISPLAY commands); iisplay storage keys, the CSW, and the :!W (DISPLAY command); clear virtual storage to zeros (SYSTEM CLEAR command);
simulate external interruption for the CPU timer, clock comparator,
or external interruption button on the system console (EXTERNAL command); initiate tracing facilities (TRACE command).
THE CLASS ANY COMMANDS The Anv commands comprise those commands that are available, with
the same format and operands, to all user classes. The LOGON command is used tJ gain initial access to the VM/370 system. This command also identifies you to the system and sets up your virtual machine. The DIAL command allows you to establish a logical connection between your
terminal and a previously logged-on multiple-access virtual machine. If you cannot loq on for some reason, such as a faulty line connection or
someone else usinq your user identification, the MESSAGE command allows
you to communicate with the system operator or any other logged-on user.
12 IBM VM/370 CP Command Reference for General Users

Section 3. CP Command Usage
This section describes the CP commands provided for the general user that simulate the functions available on the operator's system console.
The class G user can use these commands to control the system running in his victcral machine like an operator controls the entire VM/370 system console keys and switches. Figure 5 lists the steps a user must
follow preparation for a terminal session (steps 1 and 2), and
operation of a virtual machine (step 3).
r I I i STEP A,crrON 1----
11 User mcrst fill , out request , by , installation 1 , !2 , , I 1 I nst alIa t ion
builds rectory entry system user information I di-I fori I I FUNCTION Establish userid, user
classes, passwords,
storage requirements,
disk space, and I/O devices
Directory entry provides CP with information 'necessary to create a
virtual machine 13 User can activatel Enter CP commands to I terminal and , perform the function , beqin I required I session , COMMAND DESCRIPTION None
DIRECT command
(Figure 12)
Available class G
commands
(Figure 10) I I I 1------- -----1 I 1 I I I 1 I I I I 1 1 1------- a. activate terminal
b. transfer and store
data
c. record and control
data LOGON command 1 (Figure 10) I --------------------1
LINK, SPOOL, and TRANSFER (Figure 10) STORE, I commands
CHANG E, CLOSE, DISPLAY, DUMP, ORDER, PURGE, QUERY, and SPOOL commands
(Figure 10) 11Uniess the installation or the users change system requirements, 1 steps 1 2 do not have to be reoeated every time a user activates I a terminal after the initial session. 1
2 Throuqhout the rest of this publication, the text is interspersed , with examples of VM/370 commands and system responses. 1 All Iser input is shown in lowercase, and all system responses are I shown in uppercase. L ________ _
Fiqure 5. Controlling the virtual Machine During a Terminal Session (Part 1 of 2)
section 3. CP Command Usage 13