echo "Calulator" echo "***********************" echo "1. plus" echo "2. minus" echo "3. multiplication" echo "4. division" echo "***********************" read Calulator if [ $Calulator == 1 ] then echo "You typed Number -> 1. plus" echo "Typed number1" read number1 echo "Typed number2" read number2 echo "-------result---------" sum=$(($number1+$number2)) echo $sum elif [ $Calulator == 2 ] then e..