xset

xset is a command line tool commonly used in Unix-like operating systems to control various aspects of the X Window System. It allows users to manage settings related to the keyboard, mouse, and display of their graphical desktop environment. With xset, users can adjust settings such as screen brightness, screen saver timeout, keyboard repeat delay, mouse pointer speed, and more.

The tool provides a range of options and flags that can be used to modify these settings. For example, xset dpms allows users to control the power management settings of their display, such as turning the monitor off after a certain period of inactivity. Similarly, xset r rate adjusts the rate at which a key is repeated when pressed and held down.

Besides modifying settings, xset can also be used to gather information about the current state of the system. For instance, xset q displays the current settings of the X server, including keyboard and mouse settings, screen saver status, and monitor power management settings.

The xset command is considered an essential tool for configuring and managing the X Window System, providing users with a versatile means of customizing their graphical environment and tailoring it to their preferences.