Open the terminal and run the following command to install preload: sudo apt-get install preload
Now to start preload run the following command in terminal:
sudo /etc/init.d/preload start
It will be installed instantly. Now it will run in the background and will keep track of the applciations you run. To stop it simple run following command in terminal.
sudo /etc/init.d/preload stop
The configuration file for Preload is kept in /etc/preload.conf and the default values should be fine for most people. But if you want to tweak the operation of Preload, an explanation of the options is available in the configuration file.
you can monitor Preload logfile by running:sudo tail -f /var/log/preload.log