if [ $1 = "-a" -o "--add" ] && [ $2 = userlist ]
# Haven't finished this part...
then
     echo -e "Adding users from userlist."
else 
     adduser $2
     echo -e "$2 was added."
fi
if [ $1 = "-d" -o "--delete" ]
then
     userdel $2
     rm -r /home/$2
     echo -e "$2 was deleted."
fi
if [ $1 = "-l" -o "--list" ]
then
     cat /etc/passwd | grep $2
fi