Qnap Linux Station: How to log in with VNC to your Ubuntu instance.

Great guide here with more thorough information (I “borrowed” the script below from this page):

How it works

The VNC Password is stored in the folder “/tmp/.qnap/vncpassword” on your running Ubuntu instance. In the terminal on your Ubuntu instance you can view the temporary password by running the command:

sudo more /tmp/.qnap/vncpassword

Note that the Password changes when you restart Linux Station or the Ubuntu instance.

How to change to a permanent VNC password

Create the file setmyvncpassword.service on the Ubuntu instance:

sudo nano /etc/systemd/user/setmyvncpassword.service

Add file content:

[Unit]
Description=set my password for vnc
Before=x11vnc.service
[Service]
ExecStartPre=/bin/mkdir -m 0700 -p /tmp/.qnap
ExecStartPre=/bin/bash -c "echo MY_PASSWORD > /tmp/.qnap/vncpassword"
ExecStart=/bin/true
Type=oneshot
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target

Exchange “MY_PASSWORD” for your own private password. Use CTRL+X to exit and then type “Y”+ Enter to save.

To enable script on boot type the command:

sudo systemctl enable /etc/systemd/user/setmyvncpassword.service