linux下批量并行telnet对端端口的实现方法

 　　以下是以telnet对端22端口为例,　　station91:~/shell/telnet_port # pwd,　　/root/shell/telnet_port,　　station91:~/shell/telnet_port # cat telnet_port.sh,　　#!/bin/bash,　　rm telnet_result.txt >/dev/null 2>&1,　　PORT_22=22,　　for i in $(cat ip.list),　　do (telnet $i $PORT_22<>telnet_result.txt &) >/dev/null 2>&1,　　#加&让其并行执行,>>telnet_result.txt记录telnet过程中的日志,　　quit,　　EOF,　　done,　　cat telnet_result.txt | grep -B 1 ] | grep [1-9] | awk {print $3} | cut -d . -f 1,2,3,4 > telnet_alive.txt,　　cat ip.list telnet_alive.txt | sort | uniq -u > telnet_die.txt,　　station91:~/shell/telnet_port # for i in {88..93};do echo "192.168.14.$i">>ip.list;done #使用for循环得到需要telnet主机的ip,　　station91:~/shell/telnet_port # cat ip.list,　　192.168.14.88,　　192.168.14.89,　　192.168.14.90,　　192.168.14.91,　　192.168.14.92,　　192.168.14.93,　　station91:~/shell/telnet_port # ls,　　ip.list telnet_port.sh,　　station91:~/shell/telnet_port # ./telnet_port.sh &,　　[1] 16848,　　station91:~/shell/telnet_port # ls,　　ip.list telnet_alive.txt telnet_die.txt telnet_port.sh telnet_result.txt,　　[1]+ Done ./telnet_port.sh,　　station91:~/shell/telnet_port # cat telnet_alive.txt //从本机telnet对端22端口能telnet通的只有192.168.14.91,　　192.168.14.91,　　station91:~/shell/telnet_port # cat telnet_die.txt,　　192.168.14.88,　　192.168.14.89,　　192.168.14.90,　　192.168.14.92,　　192.168.14.93,　　station91:~/shell/telnet_port # cat telnet_result.txt //记录的日志格式,　　Trying 192.168.14.91...,　　Connected to 192.168.14.91.,　　Escape character is ^].,　　Trying 192.168.14.88...,　　Trying 192.168.14.89...,　　Trying 192.168.14.90...,　　Trying 192.168.14.92...,　　Trying 192.168.14.93...,