if [ "$number" = "1" ]; then
    echo "Number equals 1"
else
    echo "Number does not equal 1"
fi

read character
case $character in
            # Check for letters
    [a-z] | [A-Z] ) echo "Alpha range i[a-z]: You typed the letter $character"
            ;;
            # Check for digits
    [0-9] )     echo "Numeric range: 0-9: You typed the digit $character"
            ;;
            # Check for anything else
    * )         echo "You did not type a letter or a digit"
esac