#!/bin/bash
gui () {
  echo switching to graphical display 
  sudo systemctl isolate graphical.target
  echo starting display manager
  sudo systemctl start lightdm
  echo starting remote desktop server
  sudo systemctl start nxserver
}

tui () {  
 echo switching to text only command line mode
 echo stopping display manager
 sudo systemctl stop lightdm
 echo stopping graphical display
 sudo systemctl isolate multi-user.target
 sleep 3
 sudo chvt ${VTTY:-2}
 echo stopping remote desktop server
 sudo systemctl stop nxserver
}

tui_default () {  
 echo curret default display target $(systemctl get-default)
 echo setting boot default to command line only
 sudo systemctl set-default multi-user.target
 echo new default display target $(systemctl get-default)
}

gui_default () {  
 echo curret default display target $(systemctl get-default)
 echo setting boot default to graphical
 sudo systemctl set-default graphical.target
 echo new default display target $(systemctl get-default)
}