I'm trying to add 1 number from the command line, and one number as like a default. For example: When user types in the number 50 the script will add 10 ( as the default number).
./script 50 The sum of 50+ 10 is 60.
This is what I have so far.
echo -n "Please enter a number: " read number default = 10 sum = $((default + number)) // this line does not seem to work echo "The sum of $number and 10 is $sum."
Do I have the syntax wrong? I'm not sure if I'm on the right track. Am I adding the numbers wrong? Should I use awk instead?
let sum = $default + $number