Read a variable in bash with a default value

Question

I need to read a value from the terminal in a bash script. I would like to be able to provide a default value that the user can change.

# Please enter your          


        

Answer 1

#Script for calculating various values in MB
echo "Please enter some input: "
read input_variable
echo $input_variable | awk '{ foo = $1 / 1024 / 1024 ; print foo "MB" }'