Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I have an application that I'd like to run, yet I'd like it to be visible only through a certain VNC port.

I don't want the app to show up on the normal Ubuntu desktop. I want the app to run "in the background", and be viewable through VNC only. And when connected to this "alternate X server", the end-user wouldn't see any menu bars, no window decorations.. Just the app.

Come to think of it, what I'm asking for is a sort of kiosk-mode for only a certain app, accessible through VNC.

Is this possible or am I really reaching here?

Thanks!

Note that the app I wish to run in this fashion is written in Java. It is a JNLP file.

share|improve this question

1 Answer 1

up vote 0 down vote accepted

I have successfully accomplished this. Here's how.


Install the necessary software.

sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java7-installer xvfb x11vnc vnc-java blackbox xterm

Set a password for the VNC connection.

x11vnc -storepasswd

Create a script file to run with cron.

sudo nano /sflowtrend.sh

These are the contents of the file.

#!/bin/bash

log="/sflowtrend.log"

echo "Closing existing sFlowTrend windows gracefully." > $log
DISPLAY=:1 wmctrl -c "sFlowTrend"
sleep 5


echo "Killing all existing instances of java, Xvfb, and x11vnc." >> $log
for i in {1..3} ; do
        killall -q java
        killall -q x11vnc
        killall -q Xvfb
        echo "Iteration $i of kill cycle complete." >> $log
        sleep 2
done

echo >> $log

Xvfb :1 -screen 0 1200x800x24+32 -ac &
echo "Fake X launched." >> $log

x11vnc -display :1 --nocursor --httpdir /usr/share/vnc-java --httpport 6789 --usepw --forever --quiet --shared &
echo "VNC launched." >> $log

DISPLAY=:1 blackbox &
echo "BlackBok launched." >> $log

DISPLAY=:1 javaws /home/administrator/Downloads/sFlowTrend.jnlp &
echo "sFlowTrend (Java) launched." >> $log

echo >> $log

echo "Sleeping for one minute." >> $log
sleep 10
echo "Sleeping for fifty seconds." >> $log
sleep 10
echo "Sleeping for forty seconds." >> $log
sleep 10
echo "Sleeping for thirty seconds." >> $log
sleep 10
echo "Sleeping for twenty seconds." >> $log
sleep 10
echo "Sleeping for ten seconds." >> $log
sleep 10

echo >> $log

DISPLAY=:1 wmctrl -r "sFlowTrend" -b add,fullscreen
echo "sFlowTend now running in fullscreen." >> $log

echo >> $log

echo "Have fun!" >> $log

Edit root's crontab.

sudo crontab -e

Add the following line to the end of the crontab.

@reboot bash /sflowtrend.sh

Reboot, and try connecting to your server, port 6789

http://ubuntu-hostname:6789

This worked for me, and I wanted to share.

Have fun!


Sources

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.