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EXEC 2
EXEC 2 is an interpreted, command procedure control, computer scripting language used by the EXEC 2 Processor originally supplied with the CMS component of the IBM Virtual Machine/System Product ( VM/SP) operating system. Relation to EXEC EXEC 2 is mostly compatible with CMS EXEC but EXEC 2 scripts must begin with an &TRACE statement. Some EXEC statements and predefined variables do not exist in EXEC 2, although in some cases there are analogs. There are some minor differences in some statements and predefined functions. EXEC 2 has the following enhancements: * There is no 8-byte restriction on token length. * Statements can be up to 255 characters long. * EXEC 2 can issue commands to subcommand environments as well as CMS and CP. * EXEC 2 has additional built-in functions. * EXEC 2 has user-defined functions. * EXEC 2 commands may include subroutines and functions. * EXEC 2 has extra debugging facilities. * CMS programs can manipulate EXEC 2 variables. Some statemts of EXEC a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
REXX
Rexx (restructured extended executor) is a high-level programming language developed at IBM by Mike Cowlishaw. Both proprietary and open-source software, open source Rexx interpreter (computing), interpreters exist for a wide range of computing platforms, and compilers exist for IBM mainframe computers. Rexx is used for scripting language, scripting, application software, application macro (computer science), macros and Software development, application development. As a general purpose scripting language, Rexx is considered a precursor to Tcl and Python (programming language), Python. Rexx is supported in a variety of environments. It is the primary scripting language in some operating systems including OS/2, MVS, VM (operating system), VM, AmigaOS and is used for macros in some software including SPF/PC, XEDIT#PC and Unix adaptations, KEDIT, The Hessling Editor, THE and ZOC (software), ZOC. With an engine installed, Rexx can be used for scripting and macros in programs that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VM (operating System)
VM (often: VM/CMS) is a family of IBM virtual machine operating systems used on IBM mainframes System/370, System/390, zSeries, System z and compatible systems, including the Hercules (emulator), Hercules emulator for personal computers. Design The heart of the VM architecture is the ''Control Program'' or hypervisor abbreviated CP, VM-CP and sometimes, ambiguously, VM. It runs on the physical hardware, and creates the virtual machine environment. VM-CP provides full virtualization of the physical machine – including all I/O and other privileged operations. It performs the system's resource-sharing, including device management, dispatching, virtual storage management, and other traditional operating system tasks. Each VM user is provided with a separate virtual machine having its own address space, virtual devices, etc., and which is capable of running any software that could be run on a stand-alone machine. A given VM mainframe typically runs hundreds or thousands of virt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scripting Language
In computing, a script is a relatively short and simple set of instructions that typically automation, automate an otherwise manual process. The act of writing a script is called scripting. A scripting language or script language is a programming language that is used for scripting. Originally, scripting was limited to automating an operating system shell and languages were relatively simple. Today, scripting is more pervasive and some languages include modern features that allow them to be used for Application software, application development as well as scripting. Overview A scripting language can be a general purpose language or a domain-specific language for a particular environment. When embedded in an application, it may be called an extension language. A scripting language is sometimes referred to as very high-level programming language if it operates at a high level of abstraction, or as a control language, particularly for job control languages on mainframes. The te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conversational Monitor System
The Conversational Monitor System (CMS, originally Cambridge Monitor System) is a simple interactive single-user operating system. CMS was originally developed as part of IBM's CP/CMS operating system, which went into production use in 1967. CMS is part of IBM's VM family, which runs on IBM mainframe computers. VM was first announced in 1972, and is still in use today as z/VM. CMS runs as a "guest" operating system in a private virtual machine created by the VM ''control program''. The control program plus CMS together create a multi-user time-sharing operating system. History CMS was originally developed as part of IBM's CP/CMS operating system. At the time, the acronym meant "Cambridge Monitor System" (but also: "Console Monitor System"). * CMS first ran under CP-40, a one-off research system using custom hardware at IBM's Cambridge Scientific Center. Production use at CSC began in January 1967. The CMS user interface drew heavily on experience with the influential ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VM/SP
VM (often: VM/CMS) is a family of IBM virtual machine operating systems used on IBM mainframes System/370, System/390, zSeries, System z and compatible systems, including the Hercules emulator for personal computers. Design The heart of the VM architecture is the ''Control Program'' or hypervisor abbreviated CP, VM-CP and sometimes, ambiguously, VM. It runs on the physical hardware, and creates the virtual machine environment. VM-CP provides full virtualization of the physical machine – including all I/O and other privileged operations. It performs the system's resource-sharing, including device management, dispatching, virtual storage management, and other traditional operating system tasks. Each VM user is provided with a separate virtual machine having its own address space, virtual devices, etc., and which is capable of running any software that could be run on a stand-alone machine. A given VM mainframe typically runs hundreds or thousands of virtual machine instances ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CMS EXEC
CMS EXEC, or EXEC, is an interpreted, command procedure control, computer scripting language used by the CMS EXEC Processor supplied with the IBM Virtual Machine/Conversational Monitor System (VM/CMS) operating system. EXEC was written in 1966 by Stuart Madnick at MIT on the model of CTSS RUNCOM. He originally called this processor COMMAND, and it was later renamed EXEC. CMS EXEC has been superseded by EXEC 2 and REXX. All three — CMS EXEC, EXEC 2 and REXX — continue to be supported by the IBM CMS product. The EXEC language *EXEC processes lines up to 130 characters long when entered from a terminal, or 72 characters when read from a file. *A ''label'' consisting of a dash followed by up to seven alphanumeric characters can prefix a CMS command or an EXEC control statement. *The interpreter parses commands into blank-delimited '' tokens'' of up to eight characters each. *Variables consist of an ampersand followed by up to seven alphanumeric characters. Variables can be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XEDIT
XEDIT is a visual editor for VM (operating system), VM/CMS using block-oriented terminal, block mode IBM 3270 Computer terminal, terminals. (Line-mode terminals are also supported.) XEDIT is much more line-oriented than modern Personal computer, PC and Unix editors. For example, XEDIT supports automatic line numbers, and many of the commands operate on blocks of lines. A pair of features allows selective line and column editing. The ''ALL'' command, for example, hides all lines not matching the described pattern, and the COL (Column) command allows hiding those columns not specified. Hence changing, for example, the word NO as it appears only in columns 24 thru 28, to YES, and only on lines with the word FLEXIBLE, is doable. Another feature is a ''command line'' which allows the user to type arbitrary editor commands. Because IBM 3270 terminals do not transmit data to the computer until certain special keys are pressed [such as , a program function key (PFK), or a program acc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Z/VM
z/VM is the current version in IBM's VM family of virtual machine operating systems. First released in October 2000, z/VM remains in active use and development . It is directly based on technology and concepts dating back to the 1960s, particularly IBM's CP/CMS on the IBM System/360-67 (see article History of CP/CMS for historical details). z/VM runs on IBM's IBM Z family of computers and can support large numbers (thousands) of Linux virtual machines. (See Linux on IBM Z.) On 16 September 2022, IBM released z/VM Version 7.3 which requires z/Architecture, implemented in IBM's EC12, BC12 and later models. See also * OpenSolaris for System z * PR/SM * Time-sharing system evolution * z/OS * z/TPF * z/VSE References Citations ; Primary CP/CMS sources: * R. J. Creasy,The origin of the VM/370 time-sharing system, ''IBM Journal of Research & Development'', Vol. 25, No. 5 (September 1981), ''pp.'' 483–90, PDF― perspective on CP/CMS and VM history by the CP-40 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM Mainframe Operating Systems
International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is a publicly traded company and one of the 30 companies in the Dow Jones Industrial Average. IBM is the largest industrial research organization in the world, with 19 research facilities across a dozen countries; for 29 consecutive years, from 1993 to 2021, it held the record for most annual U.S. patents generated by a business. IBM was founded in 1911 as the Computing-Tabulating-Recording Company (CTR), a holding company of manufacturers of record-keeping and measuring systems. It was renamed "International Business Machines" in 1924 and soon became the leading manufacturer of punch-card tabulating systems. During the 1960s and 1970s, the IBM mainframe, exemplified by the System/360 and its successors, was the world's dominant computing platform, with the company p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scripting Languages
In computing, a script is a relatively short and simple set of instructions that typically automation, automate an otherwise manual process. The act of writing a script is called scripting. A scripting language or script language is a programming language that is used for scripting. Originally, scripting was limited to automating an operating system shell and languages were relatively simple. Today, scripting is more pervasive and some languages include modern features that allow them to be used for Application software, application development as well as scripting. Overview A scripting language can be a general purpose language or a domain-specific language for a particular environment. When embedded in an application, it may be called an extension language. A scripting language is sometimes referred to as very high-level programming language if it operates at a high level of abstraction, or as a control language, particularly for job control languages on mainframes. The te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
