1. Nginx command line parameters
-C < / path / to / config > specifies a configuration file for nginx instead of the default.
-T does not run, just tests the configuration file. Nginx will check the syntax of the configuration file for correctness and try to open the file referenced in the configuration file.
-V shows the version of nginx.
-V shows the version, compiler version and configuration parameters of nginx.
Detailed explanation of nginx configuration file