Exe 9

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https://drive.google.com/file/d/0B7XPEHUDOdNmWS1WQlFLSDFXZGc/view?usp=sharing
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clear
echo "Welcome to Linux Scripts"
echo -n "Username: "
read user
pass="password"
echo -n "Password: "
read pass
if [ $pass == $pass ]; then
x=y
else
echo "Password Denied"
echo "Goodbye, $user"
fi

if [ $x = "y" ]; then
clear
echo "PASSWORD ACCEPTED!!!"
echo "[a]-Grades Remarks"
echo "[b]-About"
echo "[c]-Exit"
echo -n ": "
read answer

case $answer in
"A" |"a")
echo -n "Enter Grade: ";
read grade

if [ $grade -le 69 ]; then
echo "Poor"
elif [ $grade -le 79 ]; then
echo "Fair"
elif [ $grade -le 84 ]; then
echo "Good"
elif [ $grade -le 89 ]; then
echo "Very Good"
elif [ $grade -le 100 ]; then
echo "Excellent"
elif [ $grade -gt 100 ]; then
echo "Invalid"
elif [ $grade -le 0 ]; then
echo "Invalid"
fi
"B" |"b")
echo "Program By: ";;
"C" |"c")
echo "Bye $user";;
*)
echo "Not in the choice!"
esac
fi