2. Restart Raspberry Pi

Input the following command into the terminal to restart Raspberry Pi. The temp_control

program will be auto started after that. Then, the fan, RGB LEDs, and OLED will response

accordingly.

sudo reboot

3. Exit the program

Since the autostart program is running in the background, we cannot directly exit the program at

the opened terminal. If we need to revise the program, but worry that the background process

would interfere with the debug results, what should we do? Well, it is easy, just check the

process number(PID) of the background program, and then end the process.

1. Input top into the terminal to open process table.

The system will list out the processes that take up more CPU resources, and sometimes it may be

necessary to wait for a while. From the figure above, we can see that the PID of the autostart

program temp_control is718. Now, just kill it, and press Ctrl+C to exit top.

2. End the process

sudo kill -9 PID

For example, run the command sudo kill -9 718 to end the temp_control process, then it will

prompt the process does not exist when re-running.