xiv VM/370 c!'!s Command and
Section 1. Introduction and General Concepts
Virtual :1achine Facility/370 (VM/370) is a system contr::>l program (SCP) that controls "virtual machines." A virtual machine is the functional of a real machine, but where the real machine has lights to
show and buttons and switches on the real system console to
control it, the virtual machine has a virtual system c::>nsole to display
status a command language to start operations and contr::>l them. The virtual system console is your terminal; there are three command which correspond roughly to the four comp::>nents of the system: :ontrol (CP) controls the resources of the real machine;
that is, the physical machine in your computer room. The CP commands
are described in for The Remote Spooling Communications Subsystem (RSCS) is a subsystem
designed to supervise transmission of files across a teleprocessing
network controlled by CPo For information about RSCS, see the RgmQtg Ihe :onv?rsational Monitor System (CMS; is a conversational operating svstem designed to run under CPo All of the CMS commands for general use, the subcommands and that you can use in the environment, are described in this publication. The Interactive Problem Control System (IPCS) provides and installation support personnel analvsis and management facilities, including problem
cceation, problem tracking, and CP abend dump analysis. IP:S the CMS command environment; for details, see system
problem
report
runs in E[cept for IPCS, each of the components of a unique
"command environment" which must be active in order for a command to be
acceoteJ. For CMS users, the two basic conmand environments are the CP environment and the eMS command environment. By default, CP are acceptable input in the CMS command environment; if you enteL a :P command, it is executed by CP, but control returns to the CMS environment.
The eMS Environment The :MS command language allows you to create, modify, debug, and, in
general, a system of files. JS/VS Assembler and many as/vs ana DOS/VSE Language processors
can be executed under eMS. For example, the OS VS BASIC, FORTRAN IV and PL/T compilers, as well as the DOS FL/I and caSOL compilers, can execute under CMS. You can find a complete list of
language processors that can be executed under CMS in the CMS invokes the assembler and the compilers when you
issue the appropriate eMS commands. The ASSEMBLE command is described
in this manual; the supported compiler commands ace described in the program product publications.
section 1. Introduction and General Concepts
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