06-Lab-While.md

Lab while

• Lets do some practical with while Loop

1. Solution is given below

   mission_name=$1
   
   mkdir $mission_name
   
   rocket-add $mission_name
   
   rocket-start-power $mission_name
   rocket-internal-power $mission_name
   rocket-start-sequence $mission_name
   rocket-start-engine $mission_name
   rocket-lift-off $mission_name
   
   rocket_status=$(rocket-status $mission_name)
   
   echo "The status of launch is $rocket_status"
   
   while [ $rocket_status = "launching" ]
   do
     sleep 2
     rocket_status=$(rocket-status $mission_name)
   done
   
   if [ $rocket_status = "failed" ]
   then
     rocket-debug
   fi
   

2. Solution is given below

   to_number=$1
   number=0
   while [ $number -lt $to_number ]
   do
     echo $(( number++ ))
   done
   

3. Solution is given below

   Print the numbers from 0 to give number
   

4. Solution is given below

   while true
   do
     echo "1. Add"
     echo "2. Subsctract"
     echo "3. Multiply"
     echo "4. Divide"
     echo "5. Quit"
   
     read -p "Enter your choice: " choice
   
     if [ $choice -eq 1 ]
     then
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 + $number2 ))
     elif [ $choice -eq 2 ]
     then
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 - $number2 ))
     elif [ $choice -eq 3 ]
     then
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 * $number2 ))
     elif [ $choice -eq 4 ]
     then
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 / $number2 ))
     elif [ $choice -eq 5 ]
     then
       break
     fi
   
   done