lesson-sudo() {
cat << EOF
	The sudoers file is designed so that one file
	can define access controls for multiple systems.
	It does this by associating each rule with a 
	specific set of hosts. When a host is referred to 
	by a simple hostname, the name given must match the 
	result of the hostname command. 

	In this case, the sudoers file referred to localhost,
	but your system's hostname was serverX. You could
	fix the problem by changing the system's hostname to 
	localhost, but a much better solution would be to change
	the line in /etc/sudoers to read:

		student	serverX = (ALL) NOPASSWD:ALL

	Remember to use the visudo command rather than editing
	/etc/sudoers directly.

	Additionally, the following line would properly support
	the wheel group:

		%wheel	serverX = (ALL)	ALL

	Lessons:

		o  Some services can be very picky about how you
		   specify values.

EOF
}
