htop_in_root_window.sh

#!/bin/bash

# sudo apt-get install xvfb feh 
# edit the screen resolution below to suite your display

trap "pkill xvfb ; pkill gnome-terminal ; exit" SIGINT SIGTERM SIGHUP

( xvfb-run -a -s "-screen 0 1920x1080x24 -fbdir /var/tmp" /usr/bin/gnome-terminal --window --full-screen --hide-menubar --geometry=1920x1080+0+0 --disable-fa\
ctory -e htop ) 2>&1 >/dev/null &
while $(true)
do
  xwdtopnm /var/tmp/Xvfb_screen0 2>/dev/null | pnmtopng 2>/dev/null| feh -q --bg-fill - 2>/dev/null
  sleep 1
done