To test the product installation and the critical search paths, try building, compiling, and running a simple program.
For example:
[hello.cbl] 000100 IDENTIFICATION DIVISION. 000200 PROGRAM-ID. HELLO. 000300 AUTHOR. JOE PROGRAMMER. 000400 ENVIRONMENT DIVISION. 000500 DATA DIVISION. 000600 PROCEDURE DIVISION. 000700 MAINLINE. 000800 DISPLAY 'Hello World!'. 000900 STOP RUN.
cob2 hello.cbl -o hello
./hello
The expected result is that "Hello World!" is displayed on the screen.
echo $?
The result should be zero.