#!bin/bash
#Linux Lab 9
#Mohamed Ashour
#040766794
#Section 401
#myscript
#2014-04-07
#

choice=n

while [ $choice != "Q" ] && [ $choice != "q" ]
do
	clear
	echo "A) Create a user account"
	echo "B) Delete a user account"
	echo "C) Change supplementary group for a user account"
	echo "D) Change the initial group for a user account"
	echo "E) Change the default login shell for a user account"
	echo "F) Change the account expiration date"
	echo "Q) Quit"

	echo -n "Enter an option: "
	read choice

	if [ $choice == "A" ] || [ $choice == "a" ]
	then
		clear
		read -p "Enter username: " username
		read -p "Enter the home directory for $username: " homeD
		read -p "Enter the login shell for $username : " loginS
		sudo useradd $username -m -d $homeD -s $loginS
		echo "User $username created with directory $homeD and login shell $loginS"
		sleep 3
	elif [ $choice == "B" ] || [ $choice == "b" ]
	then
		clear
		read -p "Enter user to delete: " username
		sudo userdel -r $username
		echo "User $username deleted"
		sleep 3
	elif [ $choice == "C" ] || [ $choice == "c" ]
	then
		clear
		read -p "Enter username to change supplementary group: " username
		read -p "Enter new supplementary group: " suppGroup
		sudo groupadd $suppGroup
		sudo usermod -G $suppGroup $username
		echo "User $username supplementary group changed to $suppGroup"
		sleep 3
	elif [ $choice == "D" ] || [ $choice == "d" ]
	then
		clear
		read -p "Enter username to change initial group: " username
		read -p "Enter new initial group: " initGroup
		sudo groupadd $initGroup
		sudo usermod -g $initGroup $username
		echo "User $username initial group changed to $initGroup"
		sleep 3
	elif [ $choice == "E" ] || [ $choice == "e" ]
	then
		clear
		read -p "Enter the username to change login shell: " username
		read -p "Enter new login shell: " loginShell
		sudo chsh -s $loginShell $username
		echo "User $username login shell changed to $loginShell"
		sleep 3
	elif [ $choice == "F" ] || [ $choice == "f" ]
	then
		clear
		read -p "Enter username to change expiration date: " username
		read -p "Enter new expiration date: " date
		sudo usermod -e $date $username
		echo "User $username expiration date changed to $date"
		sleep 3
	else
		echo "ERROR: INVALID INPUT"
		sleep 3
	fi
done