Write a skeleton script that allows system administration tasks to be performed automatically from a menu-driven interface.

Useful tasks to automate include:
? automatic deletion of core files
? automatic warnings to users that use a lot of CPU time or disk space
? automatic archiving
Don’t worry about making them do anything just yet; we’ll fill this in at the end of Chapter
14, “System Administration.” For now, concentrate on making the menu and task selection
work properly and just use the echo or print commands to print out what would happen for
each selection.

Right now we’re only worried about creating a working menu for these tasks; we’ll add the
functionality later. Use the select built-in to create a menu for the tasks.