I have some issues when I issue:

/etc/init.d/nginx start or restart; it return not output.

when I issued the command

/usr/local/nginx/sbin/nginx -t the test is successful

but

/usr/local/nginx/sbin/nginx-s reload It gives me: invalid PID number "" in "/usr/local/nginx/logs/nginx.pid"

when I look at the the nginx.pid number, there is no number in there.

Can you please help me on how to solve this problem?

Thanks so much!