xsel:tldr:91474

The command "xsel -cb" is used to clear (empty) the contents of the clipboard in the X Window System.

Here's a breakdown of the command:

• "xsel" is a command-line tool in Linux/Unix systems that manipulates the X selection or clipboard.
• "-cb" is an option/flag that is used with "xsel" to specify the X clipboard as the target.

When you run "xsel -cb", it sends a request to the X server to clear the contents of the clipboard. This means that any data that was previously copied or cut from applications and stored in the clipboard will be removed, thereby making the clipboard empty.