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2 definitions found
 for job control language
From The Collaborative International Dictionary of English v.0.48 :

  job control language \job control language\ (Computers)
     A programming language used to specify the manner, timing,
     and other requirements of execution of a task or set of tasks
     submitted for execution, especially in background, on a
     multitasking computer; a programming language for controlling
     job[7] execution. Abbreviated JCL.

From The Free On-line Dictionary of Computing (30 December 2018) :

  Job Control Language
      (JCL) IBM's supremely rude
     script language, used to control the execution of programs
     in IBM OS/360's batch systems.  JCL has a very fascist
     syntax, and some versions will, for example, barf if two
     spaces appear where it expects one.
     Most programmers confronted with JCL simply copy a working
     file (or card deck), changing the file names.  Someone who
     actually understands and generates unique JCL is regarded with
     the mixed respect one gives to someone who memorises the phone
     book.  It is reported that hackers at IBM itself sometimes
     sing "Who's the breeder of the crud that mangles you and me?
     I-B-M, J-C-L, M-o-u-s-e" to the tune of the "Mickey Mouse
     Club" theme to express their opinion of the beast.
     As with COBOL, JCL is often used as an archetype of ugliness
     even by those who haven't experienced it.  However, no
     self-respecting mainframe MVS programmer would admit
     ignorance of JCL.
     See also fear and loathing.

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