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job control language

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See JCL.

(language, operating system)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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? Mentioned in ? References in periodicals archive
 
It is the first Job Control Language (JCL) product to work interactively and independently of the mainframe.
Diversified Software Unveils New Product - PRO/JCL Workstation; ... by Business Wire
0 the only Job Control Language (JCL) product with the ability to validate JCL for a target system that is different than the one the user is working on.
Diversified Software Announces PRO/JCL New Release - 2.5.0; OS/390 ... by Business Wire
LiveContent TRANS contains components equivalent to all of the leading software used to run large mainframe applications, including CICS transaction processing, VSAM indexed sequential files, DB2 and other relational database support, MVS and DOS/VSE batch job processing and job control language, together with all required communications connections.
PeerLogic, Inc. and SRA International, Inc. Offer Mainframe Cost ... by Business Wire
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