Math operations

Operate with numbers!

Operator Description Example
+ Addition echo 1+1 outputs 1+1

echo $(( 1 + 1)) outputs 2
- Substraction echo $(( 1 - 1)) outputs 0
* Multiplication echo $(( 2 * 5)) outputs 10
/ Division echo $(( 4 / 2)) outputs 2
% Modulo echo $(( 16 % 3)) outputs 1
+= Increment by constant x = 5
x+= 2
outputs 7
-= Decrement by constant x = 5
x-= 2
outputs 3
*= Multiply by constant x = 5
x*= 2
outputs 10
/= Divide by constant x = 5
x/= 2
outputs 2.5
%= Remainder by dividing with constant x = 5
x%= 2
outputs 1
** Exponentiation echo $(( 5 ** 2)) outputs 25