To test the prototype, I turned on the board, and after the login, I set up the system by using the commands discussed before, or by using the chapter_03/SYSINIT.sh script in the book's example code repository, as follows:
root@beaglebone:~# ./SYSINIT.sh done!
Then, I executed the aquarium_mon.php command as follows:
root@beaglebone:~# ./aquarium_mon.php -d -f -l
Also, I executed the video streamer with the following command:
root@beaglebone:~# LD_LIBRARY_PATH=/usr/local/lib/ mjpg_streamer -i "input_uvc.so -y -f 10 -r QVGA" -o "output_http.so -w /var/www/"
Then, I pointed my browser to the aquarium.php file on the BeagleBone Black's IP address (that is, the URL http://192.168.7.2/aquarium.php) and the game is done!
Note that at this point, we can try to force some settings or try to change some configuration variables by using the chapter_03/my_dump.sh and chapter_03/my_set.sh scripts in the book's example code repository, as follows:
root@beaglebone:~# ./my_dump.sh config n ...