The Linux kernel sits at the core of all Linux systems, including thousands of GNU/Linux distributions, the Android mobile operating system, and tons of embedded systems, networking devices, etc. Its popuarity and ubiquity can be credited to the fact that it is free and open source. Anyone can download the Linux kernel, make changes to it if they wish, and compile it for their own commercial or private use.
Steam is easily the most popular PC gaming client, and with hundreds of titles available for Linux, it is no wonder why Linux gamers would want to install Steam on Ubuntu. Valve, the company behind Steam, officially targets Ubuntu and Debian with their Linux support, which is great news for Ubuntu users.
GNOME is the default desktop environment for Ubuntu 20.04. If you don’t yet have a desktop environment installed, or have a different environment and would like to switch to GNOME, it’s very easy to do.
The default Ubuntu firewall is ufw, with is short for “uncomplicated firewall.” It comes automatically installed on all editions of Ubuntu Desktop and Ubuntu Server. Ufw is a frontend for the typical Linux iptables commands, but it is developed in such a way that basic firewall tasks can be performed without the knowledge of iptables.
netstat Linux command is used by system administrators to see information about network connections. Netstat is a powerful utility that can print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships. It has been superseded by the ss command in recent years, but is still a viable tool for network diagnostics and troubleshooting.
If you are a Windows user and do not want to take the full plunge into Linux, Windows Subsystem for Linux can be a fair compromise to at least give you some Linux capabilities on your Windows sytem. Ubuntu 22.04 is a great operating system to install on WSL, and definitely the most popular of the Linux distributions currently offered. Both Windows 10 and Windows 11 systems are capable of installing Ubuntu 22.04 through WSL.
If you are having trouble booting into your Ubuntu 22.04 system, there is a tool called Boot Repair that can remedy a broad range of frequent issues. Usually trouble with booting can be due to the GRUB boot menu or a corrupt file in the
/boot directory. Whatever the case may be, Boot Repair is an excellent software to help us start troubleshooting.
The best way to keep your Ubuntu 22.04 system and files completely secure in the case of theft is to enable full disk encryption. This way, if your device is stolen or someone is sitting at your desk and trying to boot into your PC, they will need to know your password in order to mount any partitions. Even if they access the hard drive content through other means, all files would be encrypted and no one could read their contents.
The Ubuntu 22.04
GPG error: The following signatures couldn't be verified is the most common error when attempting to include third party package repositories to the
apt package manager. The GPG error should rather be treated as a warning against potential package installation from unknown sources. Therefore, the GPG error message prompts the user to verify and manually import the third party signature belonging to relevant package developer.