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This article introduces the relevant knowledge of "how to check the number of ip connections through awk under linux". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The code is as follows:

[chengmo@localhost ~] $awk 'BEGIN {

While ("netstat-an" | getline) {

If ($5 ~ / [1-255] /)

{

Split ($5 T1, ":")

Tarr [T1 [1]] + +

}

}

For (k in tarr)

{

Print KJR Tarr [k] | "sort-r-n-k2"

}

};'

$5 is the fifth field of netstat-an. By default, the other party is connected to the ip and the port.

[chengmo@localhost ~] $time awk 'BEGIN {while ("netstat-an" | getline) {if ($5 ~ / [1-255] /) {split ($5 tarr T1, ":"); tarr [T1 [1]] +;}} for (k in tarr) {print kjintarr [k] | "sort-r-n-K2";};};'

211.151.33.14 28

113.65.21.200 14

121.32.89.106 13

60.191.178.230 12

118.133.177.104 12

58.61.152.154 11

219.137.58.20 11

124.117.248.52 11

122.198.80.145 11

222.88.15.138 10

222.44.13.191 10

222.161.47.34 10

221.4.202.210 10

218.79.64.12 10

183.17.92.193 10

120.72.128.254 10

118.118.121.244 10

116.252.38.236 10

113.248.75.44 10

Real 0m1.149s

User 0m0.032s

Sys 0m1.055s

Awk common application series, will be updated all the time! I will summarize some of my code in server management over the years and learn with my friends.

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