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Batch processing is a method of running software programs called jobs in batches automatically without user interaction. Learn about the history, examples, and modern systems of batch processing from this Wikipedia article.
Job Control Language (JCL) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. Learn about the history, features, syntax and terminology of JCL and its variations.
A job scheduler is a computer application for controlling unattended background program execution of jobs. Learn about the basic features, main concepts, and historical eras of job scheduling software on different architectures and operating systems.
A job queue is a data structure maintained by job scheduler software containing jobs to run. Users submit their programs to the queue for batch processing, and the scheduler runs them according to various parameters such as priority, time, and resources.
A shell script is a computer program designed to be run by a Unix shell, a command-line interpreter. Learn how to write shell scripts for various purposes, such as file manipulation, program execution, and printing text, and how to use shell features like loops, tests, variables, and subroutines.
Learn about the evolution of IBM mainframe operating systems from the 1950s to the present, including FORTRAN Monitor System, a tape-based system for compiling FORTRAN programs. Find out how IBM developed and adopted virtual memory and virtual machine technologies for its mainframes.
As time sharing systems developed, interactive job control emerged. An end-user in a time sharing system could submit a job interactively from his remote terminal (remote job entry), communicate with the operators to warn them of special requirements, and query the system as to its progress. He could assign a priority to the job, and terminate ...
A Round Robin preemptive scheduling example with quantum=3. Round-robin (RR) is one of the algorithms employed by process and network schedulers in computing. [1] [2] As the term is generally used, time slices (also known as time quanta) [3] are assigned to each process in equal portions and in circular order, handling all processes without priority (also known as cyclic executive).