What is the difference between the presence and absence of the -g option in nginx?

Question

https://en.wikipedia.org/wiki/Debug_symbol

When running nginx on the docker, I was curious about -g option.

CMD ["nginx", "-g", "daemon off;"]

Searching wikipedia, it is so hard for me.

-g option, can I use new commands? or Is there any other difference?

Plz, Tell me. Thanks! :D

Answer 1

The -g option of NGINX is used for specifying NGINX flags, daemon off in this case.
It has nothing to do with GCC's -g option or the mentioned Wikipedia link.

For NGINX command line options, see:

• https://www.nginx.com/resources/wiki/start/topics/tutorials/commandline/

For explanation about the daemon off setting:

• What is the difference between nginx daemon on/off option?