An important function of the Lsof/netstat command: Check the port according to the process, check the process according to the port

We know, according to Ps-aux | grep xxx is to quickly realize the process name and process number of mutual check, so we only say process number PID on the line. In the following example, the process PID is resident.

1. According to process PID Check port:

Lsof-i | grep pid

2. According to the port search process (an interview has also been tested):

Lsof-i:port

3. According to process PID Check port:

Netstat-nap | grep pid

4. According to port search process

Netstat-nap | grep Port

From a formal perspective, netstat-nap better memory, but the use of lsof should also be skilled.