shell脚本-获取互联网公司web server 信息

转载：http://blog.csdn.net/longxibendi/article/details/6412822

#!/bin/bash 
#author longxibendi 
#blog http://blog.csdn.net/longxibendi 
#function get the web servers information of companies' 
if [ -e ./web_server.log ] ;then 
 rm -f ./web_server.log 
fi 
if [ -e ./ab.log ] ; then 
 rm -f ./ab.log 
fi 
for company_name in taobao jd dangdang vancl mbaobao alibaba baidu yahoo sina sohu renren changyou wanmei 126 163 139 
do 
 { 
 ab -n 1 -c 1 http://www.${company_name}.com/index.html | tee ./ab_${company_name}.log 2>&1 
 if [ $? -eq 0 ] ; then 
 printf "%15s, %20s\n" "${company_name}.com", " ` cat ./ab_${company_name}.log | grep "Server Software" ` " >> ./web_server.log 
 fi 
 sleep 2 
 }& 
done 
wait 
echo "It is OK "