Linux 查看连接数命令

Linux 查看连接数命令：

1 netstat -n | awk ‘/^tcp/ {n=split($(NF-1),array,”:”);if(n<=2)++S[array[(1)]];else++S[array[(4)]];++s[$NF];++N} END {for(a in S){printf(“%-20s %s\n”, a, S[a]);++I}printf(“%-20s %s\n”,”TOTAL_IP”,I);for(a in s) printf(“%-20s %s\n”, a, s[a]);printf(“%-20s %s\n”,”TOTAL_LINK”,N);}’

显示结果:

2 TOTAL_IP             2567
3 LAST_ACK             1252
4 SYN_RECV             434
5 CLOSE_WAIT           1145
6 ESTABLISHED          3601
7 FIN_WAIT1            261
8 FIN_WAIT2            26
9 CLOSING              2
10 SYN_SENT             1864
11 TIME_WAIT            2494
12 TOTAL_LINK           11079