recv的tcp最后二十位的端口连接情况

catrecv_tcp.sh#!/bin/bashwhile[true];do/bin/sleep1DATE=`date+%Y/%m/%d-%H:%M:%S`netstat-anp|greptcp|tail-20|grep-vsshd|awk-vb=$DATE'{printb"\t"$4"-"$5"\t"$2}'>>/data/sh/recvd_tcp.txtdone


recv的udp最后二十位的端口连接情况

#!/bin/bashwhile[true];do/bin/sleep1DATE=`date+%Y/%m/%d-%H:%M:%S`netstat-anp|grepudp|grep-vntp|awk-vb=$DATE'{printb"\t"$4"\t"$2}'>>/data/sh/recvd_udp.txtdone

-v是赋值变量的含意，把$date的变量赋值给b

print b 输出b \t 想当于输出一个tab健的空