I’m recently doing an IoT project. I wanted to investigate the network layer, and to do so I use Wireshark to capture the network traffic between my iOS apps and IoT hardware. Let’s see how to start packet sniffing using Wireshark!   Install Wireshark Wireshark is free and open-source. You can download Wireshark from its official website https://www.wireshark.org/. Once installed, open Wireshark and run the following command to check the existing interfaces: ifconfig...

It is really simple to switch users in Ubuntu or any other Linux distribution using the terminal, iTerm2 or your go to shell program. All you need to do is to know the username and its account password and you can switch users with su command: su another_usernameYou’ll be asked to enter the password of the user you want to switch to.   List all the users on Linux Let’s say you want to create a sudo user in Linux. Probably, the very first thing to know is how to know what users are in my...