[root@localhost/]# nginx -s reload
nginx: [alert] kill(189, 1) failed (3: No such process)  杀死189进程，可是并没有
[root@localhost /]# whereis ngnix
ngnix:[root@localhost/]# 
[root@localhost /]# find / -name nginx 
/usr/local/src/nginx/sbin/nginx

[root@localhost /]# find / -name nginx.conf

/usr/local/src/nginx/conf/nginx.conf
[root@localhost /]# /usr/local/src/nginx/sbin/nginx -c /usr/local/src/nginx/conf/nginx.conf
[root@localhost/]# nginx -s reload