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
