To watch and monitor the Tailscale session commands and their outputs on your ThinkPad (Ubuntu server) without a GUI, you can use a terminal-based monitoring tool. One excellent option for this is tmux (Terminal Multiplexer). Here's how you can set this up:

1. Install tmux on your ThinkPad:

   sudo apt install tmux
   

2. Start a new tmux session:

   tmux new -s tailscale_monitor
   

3. In this tmux session, you can split the screen and run different commands. For example:

   • To view Tailscale status:

     watch -n 5 tailscale status
     

   • To monitor Tailscale logs:

     sudo journalctl -fu tailscaled
     

4. You can create multiple panes in tmux by pressing Ctrl+B then % for vertical split or " for horizontal split.

5. Switch between panes using Ctrl+B then arrow keys.

6. To detach from the tmux session (leaving it running in the background), press Ctrl+B then D.

7. To reattach to the session later:

   tmux attach -t tailscale_monitor
   

This setup allows you to monitor Tailscale activities in real-time without a GUI. You can customize the commands and layout to suit your specific monitoring needs.

Would you like me to explain more about tmux or suggest other monitoring commands for Tailscale?