How do I multiple, divide, and use modulus in bash shell scripts?

shoebill

Use the mathematics the symbols are `x, ÷, and mod

Here you can see them use in a shell script, using arithmetic operators x, /, and %

$ cat arithmetic.sh

# Multiply
let "sum=10 * 2"
echo $sum

# Divide
let "sum=10 / 2"
echo $sum

# Modulus
let "sum=10 % 3"
echo $sum

Running this script give the following results:

$ ./arithmetic.sh
20
5
1