## Shell Scripting let command

The **let** command is an arithmetic operator. It is almost same as (( )). Only difference is that, let is an arithmetic command while (( )) is a compound command.

It is a built-in command which instructs shell to perform an evaluation of arithmetic expressions. No spaces should be used around the arithmetic operant with **let** command.

Look at the above snapshot, **let** command can be applied in different ways as shown.