What Does Job Mean?

A job refers to a unit of work or set of instructions given to an OS to execute. A job includes all the activities involved in completing a project. It may include small programs or large processes, depending on the project.


Techopedia Explains Job

A job scheduler often schedules the task that needs to be performed. These are arranged as a batch of jobs which will be given to the OS to perform by executing them in the background when other time-interactive activities are not taking place. The jobs that need to be run are lined up; this is known as job queue. Jobs are queued up and the time for each job is scheduled using the job scheduler. This makes system administration or maintenance activities easy by allowing the user to automate the job rather than perform it manually.

  1. In mainframe and mini computers, a separate language known as job control language (JCL) is used for application launching purposes.
  2. In UNIX operating systems, job schedulers like Cron are used to schedule jobs.

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Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.