tmux:tldr:714ac
This command "Ctrl-B d" is a keyboard shortcut used in some terminal emulators and terminal multiplexer software.
Specifically, it is used in the GNU Screen software, which is a terminal multiplexer that allows you to run multiple terminal sessions within a single window.
When you press "Ctrl-B d" in GNU Screen, it detaches the current session from the terminal window, allowing you to restore it later or switch to a different session.
Detaching a session means that it keeps running in the background without being visible on the screen. This can be useful when you want to keep a long-running process active but need to temporarily switch to another task without closing the terminal window.
To restore a detached session, you can use the command "screen -r" (or "screen -r