ping命令检测脚本

通过ping命令，测试192.168.1.100到192.168.1.120之间的所有主机是否在线，如果在线，就显示“ip is up.”其中IP要换为真正的IP地址，并且以绿色显示；如果不在线，就显示“ip is down.”其中IP要换为真正的IP地址，并且以红色显示。要求，分别使用while,until和for（两种）实现。

1,  #!/bin/bash

#

for I in {100..120} ;do

ping -c 2 -W 3 192.168.1.$I &>/dev/null

RETVAL=$?

if [ $RETVAL -eq 0 ];then

echo -e "\033[32m192.168.1.$I \033[0mis up."

else

echo-e "\033[31m192.168.1.$I \033[0m is down."

fi

done

2,#!/bin/bash

#

forI ((I=100;I<=120;I++)) ;do

if ping -c 2 -W 3 192.168.1.$I&>/dev/null;then

echo -e "\033[32m192.168.1.$I \033[0mis up."

else

echo -e "\033[31m192.168.1.$I \033[0mis down."

fi

done

3，#!/bin/bash

#

declare-i I=100

declare-i sum=0

while[ $I -ge 100 -a $I -lt 120 ] ;do

sum=$(($I+1))

let I++

ping -c 3 -W 3 192.168.1.$sum&>/dev/null

RETVAL=$?

if[ $RETVAL -eq 0 ];then

echo -e "\033[32m192.168.1.$sum\033[0m is up."

else

echo -e "\033[31m192.168.1.$sum\033[0m is down."

fi

done

4，#!/bin/bash

#

declare-i I=100

declare-i sum=0

until[ $I -lt 100 -o $I -gt 119 ] ;do

sum=$(($I+1))

let I++

if  ping -c 3 -W 3 192.168.1.$sum&>/dev/null;then

echo -e "\033[32m192.168.1.$sum\033[0m is up."

else

echo -e "\033[31m192.168.1.$sum\033[0m is down."

fi

done