In Windows, you can place a program shortcut in a startup folder for running a program automatically when the system starts. In Ubuntu, you can do the same in this way:

1. Go To System > Preferences > Startup Applications
2. Click the "Add" button.
3. Name a program (e.g. Alarm Clock).
4. Click the "Browse" button and navigate to File System > usr > bin, where programs are usually installed.
5. Select a program (e.g. alarmclock), click the "Open" button followed by the "Add" button.

The above program will then be listed in additional startup programs. Check if the program runs automatically by logging out and back to the system.