auto_x11vnc.sh

#!/bin/bash
# auto_x11vnc.sh
# SPDX-License-Identifier: MIT (https://ncurl.xyz/s/o_o6DVqIR)
# https://gist.github.com/supersonictw/14dc3cfc0c82b7c9cf430ad33d0a12da

SUDO=''
if [ "$EUID" != 0 ]; then
    SUDO='sudo'
fi

VNC_PORT="5900"
VNC_PASSWORD_FILE="/etc/vncpasswd"
VNC_PASSWORD="$(cat /dev/urandom | head -n 1 | md5sum - | cut -d ' ' -f 1)"

$SUDO x11vnc -storepasswd "$VNC_PASSWORD" "$VNC_PASSWORD_FILE"
$SUDO tee "/lib/systemd/system/x11vnc.service" <<EOF
[Install]
WantedBy=graphical.target
[Unit]
Description=x11vnc Server
Wants=graphical.target
After=graphical.target
[Service]
Type=simple
Restart=always
ExecStart=$(which x11vnc) -auth guess -forever -loop -noxdamage -repeat -rfbauth $VNC_PASSWORD_FILE -rfbport $VNC_PORT -shared -display %i
EOF

echo "VNC Port: $VNC_PORT"
echo "VNC Password: $VNC_PASSWORD"

$SUDO systemctl daemon-reload
$SUDO systemctl enable --now "x11vnc.service"