How to check the number of ip connections through awk in linux system
Today, I will talk to you about how to check the number of ip connections through awk in the linux system. Many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.
What is Linux system Linux is a free-to-use and free-spread UNIX-like operating system, is a POSIX-based multi-user, multi-task, multi-threaded and multi-CPU operating system, using Linux can run major Unix tools, applications and network protocols.
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
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