It is written in C + + with a Scheme-like command interpreter for general customization and extension.
12.
While the command interpreter had a " COMPILE " command, it was not a true native machine language compiler.
13.
It seems likely that some of the Bourne Shell's constructs in Unix also derived from the Titan command interpreter.
14.
The expression tells the command interpreter to run " command " and make its output appear as a file.
15.
When a user logs in, the OS4000 JCL command interpreter SYS . COMM is loaded into the user's COMM process and started.
16.
For a few operating systems, most notably DOS, such a command interpreter provides a more flexible command line interface than the one supplied.
17.
At the narrowest and shallowest, " English-like " command interpreters require minimal complexity, but have a small range of applications.
18.
Making the command interpreter an ordinary user-level program, with additional commands provided as separate programs, was another Multics innovation popularized by Unix.
19.
In other cases, such a command interpreter can present a highly customised user interface employing the user interface and input / output facilities of the language.
20.
Immediately upon being invoked from the OS / 8 command interpreter they would overwrite OS / 8's entire resident portion-all 256 words of it.
