nginx在conf目录中启动时报错 nginx: [emerg] open() failed (2: No such file or directory)

[root@localhost conf]# ../sbin/nginx  -c nginx.conf
nginx: [emerg] open() "/usr/common/nginx/nginx.conf" failed (2: No such file or directory)

换别的目录启动：

[root@localhost nginx]# ./sbin/nginx -c conf/nginx.conf