i3:tldr:51d4b
i3 is a window manager for X11, a display server protocol used in most Linux systems. It is known for its minimalistic design and emphasis on keyboard control.
When you run the command "i3", it launches the i3 window manager, replacing the default window manager of your system. This command enables you to use the i3 window manager's features, such as managing windows in a tiled layout, creating workspaces, and executing actions using keybindings.
i3 allows you to control almost every aspect of your window manager through configuration files, which are usually located in the ".config/i3" directory in your home folder. You can modify these configuration files to customize various settings, keybindings, or add additional functionality.
Overall, the "i3" command launches the i3 window manager, providing you with a lightweight, keyboard-centric, and highly configurable window management experience on your Linux system.