Everything You Need to Automatically Launch Programs in Your Electronic Projects
Whether you are using a Raspberry Pi, Arduino, or Beaglebone, in most cases you need to automatically load programs at boot. There are many ways to do this, but at Adafruit they will guide you through the best practices for each device.
In Arduino you will use a software called bootloader, and on Linux systems it is preferable to use init system. There are other options as well, and Adafruit breaks them down each into pros and cons of using each one. This is useful because if you are creating any single purpose electroniccs project, you almost always need to start it at boot.
Automatically Launch Programs on Your Tiny Computer | Adafrut