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This article will explain in detail about the use of linux's ss command to display active sockets. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Ss is the abbreviation of Socket Statistics. The ss command is used to display socket information that is active. It can display something similar to netstat. But the advantage of ss is that it can display more and more detailed information about TCP and connection status, and is faster and more efficient than netstat.

Syntax format: ss [parameters]

Common parameters:

-n does not resolve the service name Digitally displayed-a displays all sockets-l displays sockets in monitored state-o displays timer information-e displays detailed socket information-m displays memory usage of sockets-p shows processes using sockets-I displays internal TCP information-s shows sockets usage profile-4 displays sockets for ipv4 only-6 shows sockets for ipv6 only-0 Show PACKET sockets-t only show TCP sockets-u show only UDP sockets-d show only DCCP sockets-w show only RAW sockets-x show only Unix sockets-D

Dump the original TCP socket information to a file

Reference example

Display TCP sockets:

[root@linuxcool] # ss-t-a

State Recv-Q Send-Q Local Address:Port Peer Address:Port

LISTEN 0 128 0.0.0.0:ssh 0.0.0.0 *

ESTAB 0 52 192.168.60.19:ssh 192.168.30.21:59321

LISTEN 0 128 *: websm *: *

LISTEN 0 128 [::]: ssh [::]: *

Display UDP sockets:

[root@linuxcool] # ss-u-a

State Recv-Q Send-Q Local Address:Port Peer Address:Port

UNCONN 0 0 0.0.0.0:bootpc 0.0.0.0 *

UNCONN 0 0127.0.0.1purl 323 0.0.0.0purl *

UNCONN 0 [:: 1]: 323 [::]: *

Displays an overview of socket usage:

[root@linuxcool] # ss-s

Total: 185

TCP: 4 (estab 1, closed 0, orphaned 0, timewait 0)

Transport Total IP IPv6

RAW 1 0 1

UDP 3 2 1

TCP 4 2 2

INET 8 4 4

FRAG 2000 on the use of linux's ss command to display active sockets information is shared here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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