phpsysinfo is a php script that gives you browser-based access to your systems status and configuration. Its official website is http://phpsysinfo.sourceforge.net/.
On MineOS installations earlier than 0.4.8, php-mbstring was not included in the install. Since phpsysinfo requires this module, you can install it with another add-on. Versions 0.4.8 and beyond have this module installed by default.
cd /usr/games/minecraft/addons ./mbstring.sh
Installing the addon
phpsysinfo is available as an addon.
cd /usr/games/minecraft/addons ./phpsysinfo.sh
Viewing the stats page
Point your browser to https://ip-address/admin/phpsysinfo/index.php