View the native open port number, see if a port number is occupied, see which process is occupied by the occupied port number, and how to end the process

Use the accelerator key win+r to open the Run window. Enter CMD return to open a command prompt window

1: View the port that is open for this machine, that is, the number of ports that have been occupied.

Command:

Netstat-an

Partial results list:

Proto Local Address Foreign
TCP 0.0.0.0:135 0.0.0.0:0 Listening
TCP 0.0.0.0:3473 0.0.0.0:0 Listening
TCP 0.0.0.0:8009 0.0.0.0:0 Listening

The local addresss corresponds to this column, ":" is the open port number behind.

2: See if a port number is occupied

For example, to see if MySQL's default service port 3306 is already occupied

Command:

Netstat-ano|findstr "3306"

----If no results are returned, the port is not occupied.

----If the result returned is:

TCP 0.0.0.0:8080 0.0.0.0:0 Listening 1640

Indicates that port 8080 is already occupied. 1640 is the process number that occupies 8080 of this port number.

3: View process number corresponding to the process name

Task Manager:

If you do not have a PID (process ID) column, you can select the column in the Task Manager's menu Bar-View-selection column.

Command:

Tasklist|findstr "1640"

This is the name of the process to view the 1640 process number.

The result returned is:

Tomcat5.exe 1640Console 0 33,802 K

Tomcat5.exe is the name of the process that occupies the 1640 port number.

4: End Process

You can end it directly in Task Manager, and open Task Manager shortcut key: Ctrl+shift+esc

Command:

Tskill process Name/process number

such as: Tskill Tomcat5.exe

Tskill 1640

If the process cannot end, you can close its application directly. or by using other tools

such as: xuetr (this tool can be downloaded in a personal network).