How to check whether the port is open under centos

You can use netstat or lsof to view it under CentOS, as follows:

1, netstat

netstat -nap #会列出所有正在使用的端口及关联的进程/应用

2, lsof

lsof -i :portnumber #portnumber要用具体的端口号代替，可以直接列出该端口听使用进程/应用

For example, to check the occupancy of port 80, use the following command:

lsof -i tcp:80

Recommended related tutorials: centos tutorial

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