centos – Nginx无法停止并且缺少nginx.pid

$sudo service Nginx stop
Stopping Nginx:                                            [Failed]

定义Nginx.pid位置的Nginx.conf有一行.

# /etc/Nginx/Nginx.conf
pid        /var/run/Nginx.pid;

但目录/ var / run /中没有Nginx.pid.

locate Nginx.pid显示此输出.

/var/run/Nginx.pid 
/var/run/Nginx.pid.oldbin

但在更新后,搜索没有匹配.
我在CentOS 6.5版(最终版)中使用Nginx / 1.4.4.

我应该怎么做才能阻止Nginx守护进程？

编辑2014/01/07

这是ps -ef |的输出grep Nginx,似乎Nginx守护进程仍在运行.

ironsand 17065 16933  0 15:55 pts/0    00:00:00 grep --color Nginx
root     19506     1  0  2013 ?        00:00:00 Nginx: master process /usr/sbin/Nginx -c /etc/Nginx/Nginx.conf
ironsand 19507 19506  0  2013 ?        00:00:25 Nginx: worker process

并且sudo服务Nginx restart会出现此错误.我认为Nginx无法启动,因为旧的还活着.并且/var/log/Nginx/error.log-2014017也包含此错误.

Stopping Nginx:                                            [Failed]
Starting Nginx: Nginx: [emerg] bind() to 0.0.0.0:80 Failed (98: Address already in use)
Nginx: [emerg] bind() to 0.0.0.0:80 Failed (98: Address already in use)
Nginx: [emerg] bind() to 0.0.0.0:80 Failed (98: Address already in use)
Nginx: [emerg] bind() to 0.0.0.0:80 Failed (98: Address already in use)
Nginx: [emerg] bind() to 0.0.0.0:80 Failed (98: Address already in use)
Nginx: [emerg] still Could not bind()
                                                           [Failed]