Job Control Language

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Job Control Language (JCL) is a name for scripting languages used on IBM mainframe operating systems. It instructs the system on how to run a batch job or start a subsystem.[1]

The purpose of JCL is to say which programs to run, using which files or devices [2] for input or output. It can indicate under what conditions to skip a step.

There are two distinct IBM Job Control languages:

They share some basic syntax rules and a few basic concepts, but are otherwise very different.

Notes[change | change source]

  1. "Every job submitted for execution ... must include JCL statements" --
  2. and many more complex details, such as whether the file is to be retained or deleted, the maximum of disk space to which it can grow, the name of a tape to be pre-mounted