centos查看当前运行进程id，安装目录，配置文件

以nginx为例

#查看进程

ps  -ef | grep nginx

root 9226 1 0 Aug15 ? 00:00:00 nginx: master process /usr/sbin/nginx
root 9227 9226 0 Aug15 ? 00:00:06 nginx: worker process
root 9228 9226 0 Aug15 ? 00:00:04 nginx: worker process
root 14452 10854 0 14:24 pts/0 00:00:00 grep --color=auto nginx

master process 后面的就是 nginx的目录

#端口查看进程id

netstat -anop | grep 0.0.0.0:80

tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      9226/nginx: master   off (0.00/0/0)

#查看版本

nginx -v

nginx version: nginx/1.16.1

#查看路径

ll  /proc/9226/exe

lrwxrwxrwx 1 root root 0 Aug 25 14:17 /proc/9226/exe -> /usr/sbin/nginx

#查看配置文件路径-t

 /usr/sbin/nginx -t

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful