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4 definitions found
 for JCL
From The Collaborative International Dictionary of English v.0.48 :

  JCL \JCL\, n. [all capitals] (Computers)
     Job Control Language. [Acronym]
     [PJC] JD

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (September 2014) :

  JCL
         Job Control Language (IBM, OS/360)
         

From The Jargon File (version 4.4.7, 29 Dec 2003) :

  JCL
   /J?C?L/, n.
  
      1. IBM's supremely rude Job Control Language. JCL is the script language
      used to control the execution of programs in IBM'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 memorizes 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.
  
      2. A comparative for any very rude software that a hacker is expected to
      use. ?That's as bad as JCL.? As with COBOL, JCL is often used as an
      archetype of ugliness even by those who haven't experienced it. See also {
      IBM, fear and loathing.
  
      A (poorly documented, naturally) shell simulating JCL syntax is available
      at the Retrocomputing Museum http://www.catb.org/retro/.
  

From The Free On-line Dictionary of Computing (18 March 2015) :

  Job Control Language
  JCL
  
      (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.
  
     (1999-03-03)
  

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