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Concise Command Language
Computer language From Wikipedia, the free encyclopedia
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Concise Command Language (CCL) was the term used by Digital Equipment Corporation for the Command-line interpreter / User interface supplied on several of their computing systems; its successor was named DIGITAL Command Language (DCL).
CCL provides the user with an extensive set of terminal commands.[1]
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The PDP-6 monitor came with a simple set of commands. To compile and run a FORTRAN program, one would
- .R F4 --- invoke the FORTRAN compiler
- *DTA1:PROG3=DTA2:PROG3,SUB3A,SUB3B --- specify binary output and source input
- .R LOADER 30 --- invoke the loader, allocate 30K of memory
- *DTA1:PROG3 --- specify binary object to load
- *SYS:/S --- let the loader find the appropriate subroutine libraries
- .SAVE DTA1:PROG3 --- write the executable to DTA1
- (The DOT is a monitor prompt and the Star/Asterisk is an application prompt)
The PDP-10 had CCL. Key to its improvements over its predecessor were:[2]
- multi-step commands: .EX PROG3,SUB3A,SUB3B
- would check to see if any of the 3 needed to be recompiled (and did so if necessary)
- run the object program loader (including needed subroutine libraries)
- start running the program
- advanced command file: .EX @RUNPROG3.CMD
- would run the command(s) in the .CMD file
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Commands
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The following table contains a list of CCL commands.[1]
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References
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