Introduction to npm otp-generator - Shell/Bash

What is otp-generator?

One-Time Password (OTP) Generator is a tool used to generate unique passwords that are valid only for a single login session or transaction. Using OTP adds an extra layer of security to your login process. otp-generator is a Node.js package that enables you to generate OTP codes in your terminal.

How to Install

To install otp-generator using npm, open the terminal and run:

npm install otp-generator

Usage

In your terminal or Bash script, import otp-generator by running:

otp-generator

It will generate a randomly generated OTP for you consisting of six digits.

You could also pass in options to customize the generated OTP.

Options

| Options | Description | | --- | --- | | length | The length of the generated OTP. Default: 6 | | alphabet | The allowed characters to be used to generate the OTP. Default: '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' | | upper | If set to true, only uppercase characters will be used in the generated OTP. Default: false | | digits | If set to true, only digits will be used in the generated OTP. Default: false | | lower | If set to true, only lowercase characters will be used in the generated OTP. Default: false | | secret | A string to use as a secret for generating the OTP. |

Example

otp-generator --length=8 --upper --secret=123456

This will generate a randomly generated OTP consisting of 8 uppercase characters using the secret "123456"

Returns

The otp-generator function returns a string.

Example Usage

#!/bin/bash
otp=$(otp-generator)
echo "Your One Time Password is: $otp"

This will generate a random OTP and print it out to the terminal.

Conclusion

otp-generator is a simple and useful tool for generating One-Time Passwords in your terminal or Bash scripts. By adding this extra layer of security to your login process, you can make it harder for hackers to gain access to your accounts.