08-Lab-Case-Statements.md

Labs Case Statement

• Take me to the lab Case Statement

1. Solution is given below

   The script is missing the in keyword on line 4. Lines 7 and 9 is missing ;;. Lines 13 is missing )
   
   os=Fedora
   
   case $os in
     "Fedora") echo "Uses RPM package manager" ;;
   
     "RHEL") echo "Uses RPM package manager" ;;
   
     "CentOS") echo "Uses RPM package manager" ;;
   
     "Debian") echo "Uses DEB package manager" ;;
   
     "Ubuntu")
               echo "Uses DEB package manager" ;;
   esac
   
   

2. Solution is given below

   month_number=$1
   
   if [ -z $month_number ]
   then
     echo "No month number given. Please enter a month number as a command line argument."
     echo "eg: ./print-month-number 5"
     exit
   fi
   
   if [[ $month_number -lt 1 && $month_number -gt 12 ]]
   then
     echo "Invalid month number given. Please enter a valid number - 1 to 12."
     exit
   fi
   
   case $month_number in
     1) echo "January" ;;
     2) echo "February" ;;
     3) echo "March" ;;
     4) echo "April" ;;
     5) echo "May" ;;
     6) echo "June" ;;
     7) echo "July" ;;
     8) echo "August" ;;
     9) echo "September" ;;
     10) echo "October" ;;
     11) echo "November" ;;
     12) echo "December" ;;
   esac
   
   

3. 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
   
   

4. Solution is given below

   while true
   do
     echo "1. Add"
     echo "2. Subsctract"
     echo "3. Multiply"
     echo "4. Divide"
     echo "5. Average"
     echo "6. Quit"
   
     read -p "Enter your choice: " choice
   
     case $choice in
       1)
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 + $number2 ))
           ;;
       2)
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 - $number2 ))
           ;;
   
       3)
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 * $number2 ))
           ;;
       4)
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           echo Answer=$(( $number1 / $number2 ))
           ;;
       5)
           read -p "Enter Number1: " number1
           read -p "Enter Number2: " number2
           sum=$(( number1 + number2 ))
           echo Answer=$(echo "$sum / 2" | bc -l)
           ;;
       6)
           break
           ;;
     esac
   
   done
   

5. Solution is given below

   color=$1
   red=`tput setaf 1`
   green=`tput setaf 2`
   reset=`tput sgr0`
   
   
             case $color in
                       red) echo "${red}this is red${reset}";;
                       green) echo "${green}this is green${reset}";;
                       *) echo "red and green are the only choices"
          esac