Question

Bash Script

Write a script using while-do-done loop to convert the kilometers to miles.

- Ask the user to input the number of kilometers they need to travel.

- Display the number of equivalent miles for the number. Use formula, Kilometers = miles/0.62137

- Every time the loop runs, it should ask the user if they want to continue, if user enters “Y” or “y”, then the loop runs again, if user enters “N” or “n”, then stop the loop and print “Thank you for using this application”.

- If the user enters any other character, then display/print “Invalid entry” and break the loop.

Answer 1

Bash Script:

#!/bin/bash

# Bash Script to convert miles to kilometers

conv=0.62137

# Loop till user want to stop
while [ true ]
do
   # Reading Kilometers
   read -p 'Enter number of kilometers they need to travel: ' kms  

   # Converting to miles
   miles=$(expr $kms*$conv | bc)

   # Printing results
   echo "Miles: " $miles

   # Printing option
   printf '\nDo you want to continue? '
   read choice

   # Responding to corresponding option
   case $choice in
   'Y')
       # Continuation
       ;;      

   'y') # Continuation
       ;;  
      
   'N')  
       echo "Thank you for using this application"
       # Breaking loop
       break
       ;;
     
   'n')  
       echo "Thank you for using this application"
      # Breaking loop
       break
       ;;
   *)
       # If user enters anything other than these options
       echo "Invalid entry..."
       break
       ;;
   esac
done

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Sample Run: