title: How to export display from an vagrant Linux box to MacOS host?
body: <p>I've got a Mac OS with Catalina installed. In this MAC Os host, I run a VirtualBox centos linux box (installed with Vagrant). In the Centos virtual Box I want to launch app like (google-chrome or any x application) with the display exported to the MacOS host.</p>
  
  <p>I've set the X11Forwarding yes in /etc/ssh/sshd_config (in MacOS Box AND in the Centos BOX).
  On MacOS i've installed and running XQuartz, which is working well (I can start xterm from MacOs XQuartz configuration for example).</p>
  
  <p>I ssh from MacOs into my Centos box with -X. So X11 port forwarding must be ok.</p>
  
  <p>When I start any graphical application from Centos (google-chrome for example), I always have this message :</p>
  
  <blockquote>
    <p>(google-chrome:26817): Gtk-WARNING **: 17:49:49.940: cannot open display:</p>
  </blockquote>
  
  <p>I've tried some export DISPLAY configuration but without success : always cannot open dispay</p>
  
  <p>Any help would be greatly appreciated because I'm stuck.</p>