VirtualBox is a free desktop virtual machine manager. You can use it to run the Pegasus Tutorial VM on your desktop or laptop.
First, download and install the VirtualBox platform package from the VirtualBox website: https://www.virtualbox.org
Next, download the Pegasus Tutorial VM from the Pegasus download page: http://pegasus.isi.edu/downloads
Move the downloaded file somewhere that you can find later.
Start VirtualBox. You should get a screen that looks like this:
Click on File > Import Appliance, and Appliance Import Wizard will appear:
Click the folder icon and locate the .ova file that you downloaded earlier.
Click "Continue" to get to the "Appliance Settings" Page:
Click "Import". You will get back to the welcome screen showing the new virtual machine:
Click on the name of the virual machine and then click "Start". After a few seconds you should get to the login screen:
Log in as user "tutorial" with password "pegasus".
After you log in, Click the Terminal Icon, to open a Terminal. You can return to the tutorial chapter to complete the tutorial.