/usr/local/php/sbin/php-fpm --help Usage: php-fpm [-n] [-e] [-h] [-i] [-m] [-v] [-t] [-p <prefix>] [-g <pid>] [-c <file>] [-d foo[=bar]] [-y <file>] [-D] [-F] -c <path>|<file> Look for php.ini file in this directory -n No php.ini file will be used -d foo[=bar] Define INI entry foo with value 'bar' -e Generate extended information for debugger/profiler -h This help -i PHP information -m Show compiled in modules -v Version number -p, --prefix <dir> Specify alternative prefix path to FastCGI process manager (default: /usr/local). -g, --pid <file> Specify the PID file location. -y, --fpm-config <file> Specify alternative path to FastCGI process manager config file. -t, --test Test FPM configuration and exit -D, --daemonize force to run in background, and ignore daemonize option from config file -F, --nodaemonize force to stay in foreground, and ignore daemonize option from config file -R, --allow-to-run-as-root Allow pool to run as root (disabled by default)