Let's call the file containing our COBOL Example 5 program:

      demo.cbl

The COBOL compiler is called ccbl.

1. To compile the program: Type, from the UNIX prompt:

      ccbl demo.cbl

NOTE: As a result of the compilation, a code file, called:
cbl.out, will be created.

2. To execute the program: Type, from the UNIX prompt: runcbl

NOTE: The runcbl command will use and 'interprete' the code 
file, cbl.out, to execute the Example 5 program.