x11vnc:tldr:20a26
The "x11vnc -shared" command is used to start the x11vnc server in the "shared" mode.
The x11vnc server is a program that allows remote access and control of an existing X display. It can be used to remotely connect to and control the desktop environment of another machine running X11, which is a common graphics system used by many Unix-like operating systems.
The "-shared" option in the command indicates that multiple viewers or clients can connect to the x11vnc server simultaneously and share the same session, viewing and controlling the same desktop. This can be useful in situations where collaboration or assistance is required, as multiple users can observe or interact with the remote desktop together.
By running the "x11vnc -shared" command on the remote machine, the server will start and allow multiple viewers to connect to it and view/control the desktop. The viewers can connect to the server using a VNC (Virtual Network Computing) viewer client application on their own machines.