Remind setup (no permissions yet)
	cd ~/Documents
	pwd
	ls -lR # 3 directories
	cat /etc/passwd # 4 users

Test auser & duser on AlphaDir (no permissions yet)
	su -c 'bash TestAccess.sh AlphaDir' auser
	su -c 'bash TestAccess.sh AlphaDir' duser

Create & populate group AlphaDeny
	sudo groupadd AlphaDeny
	sudo usermod -a -GAlphaDeny auser
	sudo usermod -a -GAlphaDeny cuser
	getent group AlphaDeny

Set 'other' permissions for AlphaDir & contents
	chmod o=rwx AlphaDir
	chmod o=rwx AlphaDir/*

Change group for AlphaDir & contents to AlphaDeny
	sudo chown :AlphaDeny AlphaDir
	sudo chown :AlphaDeny AlphaDir/*

Set group permissions for AlphaDir & contents
	chmod g= AlphaDir
	chmod g= AlphaDir/*

'Whitebox' test of AlphaDir permissions
	ls -lR
	getent group $(stat -c "%G" AlphaDir)
	getent group $(stat -c "%G" AlphaDir/*)

'Blackbox' test of AlphaDir permissions for auser
	su -c 'bash TestAccess.sh AlphaDir' auser
	su -c 'bash TestAccess.sh AlphaDir' duser