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| 关键词： nbsp host echo state 语句 tmp NetIP PIP 知识点 DOWN |
题目如下： #!/bin/bash#the script's name is:*********use to test the host********* #the author is :Ro#the version is :Ro-4-10let PIP=$1NetIP='192.168.1.' if [ $1 -gt 254 ];then echo "The fist number should <=254" elif [ $2 -gt 254 ];then echo "The second number should <=254" elif [ $1 -gt $2 ];then echo "The first number should <= the second number" else while [ $PIP -le $2 ];do ping -c1 -W1 $NetIP$PIP > /dev/null && echo "The host $NetIP$PIP is UP." >> /tmp/host_state || echo "The host $NetIP$PIP is DOWN." >> /tmp/host_state let PIP++ done echo "==============================" cat /tmp/host_state echo "==============================" sed '1,$s/\(.*DOWN\)./#\1/g' /tmp/host_state echo "==============================" sort -t " " -k 5 /tmp/host_state | cut -d" " -f5 | uniq -c echo "==============================" rm -rf /tmp/host_state fi 测试结果： 这个脚本主要运用到了循环语句，条件判断，如IP地址的取值范围，变量的赋值等进行判断，使用if语句和while语句结合起来达到效果，还有排序等知识点，在 以后的网络中的运用也是很广泛的 本文出自 “IT梦-齐-分享” 博客，请务必保留此出处http://roqi410.blog.51cto.com/2186161/621983 |
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