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This article mainly introduces how to configure and implement the Linux testing tool netstat. It is very detailed and has a certain reference value. Interested friends must read it!

The netstat command is a very useful tool for monitoring TCP/IP networks. It can display the routing table, the actual network connections, and the status information of each network interface device. The following is the specific implementation of the Linux testing tool netstat.

After executing the Linux test tool netstat on your computer, the output is as follows:

[root@lee / root] # netstat

Active Internet connections (w _ servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

Active UNIX domain sockets (w _ servers)

Proto RefCnt Flags Types State I-Node Path

Unix 5 [] DGRAM 460 / dev/log

Unix 0 [] STREAM CONNECTED 173 @ 00000014

Unix 0 [] DGRAM 662

Unix 0 [] DGRAM 631

Unix 0 [] DGRAM 544

Unix 0 [] DGRAM 484

Unix 0 [] DGRAM 470

[root@lee / root] #

On the whole, the output of Linux testing tool netstat can be divided into two parts: * part: it is Active Internet connections, which is called active TCP connection. In the above output, there is no content in this part, indicating that there is no TCP connection yet. The second part is Active UNIX domain sockets, which is called active Unix domain socket. The output shows the connection of the Unix domain socket:

◆ Proto shows the protocol used by the connection.

◆ RefCnt indicates the process number connected to this interface.

◆ Types shows the type of socket.

◆ State displays the current status of the socket.

◆ Path represents the pathname used by other processes connected to the socket.

You can use the Linux test tool netstat-a to view the status of all sockets, which is very useful when you are debugging network programs. The Linux test tool netstat-r displays the contents of the routing table and generally specifies the "- n" option at the same time, so that you can get the address in numeric format and the IP address of the default router. Using the Linux test tool netstat-I will display all the network interface information. The current network status and network topology can also be obtained by using the Linux testing tool netstat, which is very useful in practice.

These are all the contents of the article "how to configure and implement the Linux testing tool netstat". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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