Alternates are for system admin types who would rather work with system commands then programming ideas.
For this problem, develop a shell script that will act as a template for a menu. Ideally, the menu will be running, will wait for input from the user who chooses an option, and then will do that choice and return to the menu screen. The following functions should be developed for this first problem:
Menu Main Screen
Dump the last 100 lines of the log with a More pipe to the screen
Run an nmap local scan on the system
Quit