CJ's User account creation tool (6/16/2017)

#!/bin/bash
echo "==============================v2============================="
echo "              CJ'S USER AND GROUP CREATION TOOL"
echo "       Please keep your input limited to one argument"
echo "   - Run the script as root/sudo for guarenteed completion - "
echo "================= PRESS ANY KEY TO CONTINUE ================="
read -n 1 -s -p $'=============================================================\n'

#Creating Username Variable
echo ""
echo -n "Desired Username: "
read username

#Checking that user input != nothing
while [ "$username" = "" ];
do
	echo ""
	echo "Username field cannot be empty."
	sleep 0.5
	echo -n "Please enter a username: "
	read username
done


#Checking if username already exists within the /etc/passwd file
while grep -q -F $username /etc/passwd;
do
	echo ""
	echo "Username already exists. Please try again."
	sleep 0.5
	echo -n "Desired Username: "
	read username
	while [ "$username" = "" ];
	do
		echo ""
		echo "Username field cannot be empty."
		sleep 0.5
		echo -n "Please enter a username: "
		read username
	done
done
echo ""
echo -n "Desired Groupname: "
read groupname

#Checking if user enters nothing, therefore prompting the user to enter a groupname.
while [ "$groupname" = "" ];
do
	echo ""
	echo "Groupname field cannot be empty."
	sleep 0.5
	echo -n "Please enter a groupname: "
	read groupname
done

#Checking if groupname already exists within /etc/group file
while grep -q -F $groupname /etc/group;
do
	echo ""
	echo "Group already exists. Please try again."
	echo -n "Desired Groupname: "
	read groupname
	while [ "$username" = "" ];
	do
		echo ""
		echo "Groupname field cannot be empty."
		echo -n "Please enter a groupname: "
		read username
	done
done
echo ""
echo -n "Desired Password: "
read -s password

#Litle bit of code that sends message if the password is less than 5 chars long
while [ ${#password} -lt 5 ];
do
	echo ""
	echo "Your password must contain 5+ characters"
	sleep 0.2
	echo "Please try again."
	sleep 0.5
	echo ""
	echo -n "Desired Password: "
	read -s password
done
echo ""
sleep 1
	read -p "Initialize user/group creation? (Y/N)" yn
	case $yn in
		[Yy]* ) ;;
		[Nn]* ) exit;;
		* ) echo "Please answer yes or no.";;
	esac
#Creating the user and group and adding the user to the group
sudo useradd $username
sudo groupadd $groupname
echo $username:$password | sudo chpasswd
sudo adduser $username $groupname
sleep 1
echo "No errors = Successful"
sleep 0.2
echo "Thank you for using the tool!"