CLI RPN Calculator
RPN CLI is a Reverse Polish Notation (RPN) calculator for the command line. With RPN CLI, you can execute RPN functions in the command line.
Usage
First, install RPN CLI globally on your machine by using this command
$ npm i rpn-calculator-cli -g
To use RPN CLI in the command line, the syntax is rpn "rpn expression"
Here are a few examples
rpn "2 2 +"
rpn "100 5 / 2 +"
rpn "8 9 * - 2"
rpn "1 2 + 3 + 4 + 5 +"