terminal timer command

$ sleep 60; gmessage -bg RED -geometry 800x600 -center "Time is up." & echo "Time is up." | festival --tts

sleep 60 -> 60sec waiting.
gmessage -> display messagebox
echo "something" | festival --tts  -> Text to speech

Enabling systray in Ubuntu 11.10 Unity

1.


$ gsettings get com.canonical.Unity.Panel systray-whitelist


['JavaEmbeddedFrame', 'Wine', 'scp-dbus-service', 'Update-notifier']


$ gsettings set com.canonical.Unity.Panel systray-whitelist "['JavaEmbeddedFrame', 'Wine', 'scp-dbus-service', 'Update-notifier', 'DaumCloud']"


-> then re-login


2.


install dconf-tools


$ dconf-editor
-> desktop > unity > panel > enable the notification area


$ dconf-editor
> 

Ubuntu 11.10 unity sucks!

This unity interface is ... sucks !

Flexibility has gone... customizing become more difficult....

Linux mint or debian.. I'm considering..

Ubuntu desktop cube rotating by human physical motion.

Not so complicated as it appears.

Two distance measuring sensors detect motion and send signals to the AVR board behind the monitor.

Then, the AVR board analyze whether the object is moving to right or left, and send analyzed result to PC (ubuntu) through USB serial port.

On ubuntu, python program daemon read the serial data, and rotate desktop cube.

It was my first AVR playing.
Very funny.

python interface with arduino, send key to x

http://www.stealthcopter.com/blog/2010/02/python-interfacing-with-an-arduino/




$ sudo apt-get install xdotool
$ xdotool key Control+Alt+Left