cd /var/www/html
# fatal: detected dubious ownership in repository at '/var/www/html/mon' To add an exception for this directory, call:
git config --global --add safe.directory /var/www/html/mon
# Update/install phpsysinfo
git -C mon pull || git clone https://github.com/phpsysinfo/phpsysinfo.git mon
# Comment out SSH warning string (if you use SSH)
sed 's#^.*\($this.*SSH version of phpSysInfo.*\)#// \1#' mon/includes/os/class.SSH.inc.php

chown -R www-data:www-data mon
php-fpm83 -F