shell监控网站状态

参考地址http://jeekchen.iteye.com/blog/976819
#!/bin/bash
cd /usr/vm/server/tomcat6/webapps/mytv365/sitemap/baiduVideo
##取出http://xxxxx.html这种URL
file=`cat sitemap_new.xml | grep "http://.*html" | awk -F"[" '{print $3}' | awk -F"]" '{print $1}' >/opt/file`
for i in `cat $file`
 do
    ###这句是核心
    http_code=`curl -o /dev/null -s -w "%{http_code}" $i`
    ###如果状态是404则输出url 状态码到文件中
    if [ $http_code = 400 ]
       then
       echo "$i" "$http_code" >>/home/httpcheck
    fi
 done

ps：运行下面语句得到类似结果
[root@nagios ~]# curl -o /dev/null -s -w "%{http_code}" http://www.baidu.com
200