一个问题,有关匹配域名的,如下,这是我想写一个seo的软件，查一个关键字排名在google中多少位，但有个问题，下面是google的结果，10条一个网页，我想匹配域名出来,看看有没有我要的域名，没有,查下一个网页.在配置域名。
在匹配域名前,我要提取下面这个中的url出来,才能匹配,我不会写shell的脚本来提取.有没有高人提点一下.下面这个得到的内容基本都是一行了,所以只能取的特定的字符.
<span class=a>www.kaili.gov.cn/office/zwnews/ 200704/office_20070413163747_528.shtml - 20k - </span>
需要取得下面中如上面这种的地址出来,有10条，请帮忙看看，怎么用shell匹配上面的内容出来.
<html><head><meta http-equiv=content-type content="text/html; charset=GB2312"><title>扶凯 - Google 搜索</title>
</script></head><body bgcolor=#ffffff topmargin=3 marginheight=3><div id=gbar><nobr><span class=gb1><b>网页</b></span> <span class=gb1><a href="http://images.google.cn/images?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=wi" onclick=gbar.qs(this)>图片</a></span> <span class=gb1><a href="http://ditu.google.cn/maps?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=wl" onclick=gbar.qs(this)>地图</a></span> <span class=gb1><a href="http://news.google.cn/news?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=wn" onclick=gbar.qs(this)>资讯</a></span> <span class=gb1><a href="http://video.google.cn/videosearch?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=wv" onclick=gbar.qs(this)>视频</a></span> <span class=gb1><a href="http://blogsearch.google.cn/blogsearch?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=wb" onclick=gbar.qs(this)>博客</a></span> <span class=gb3><a href="http://www.google.cn/intl/zh-CN/options/" onclick="this.blur();gbar.tg(event);return !1"><u>更多</u> <small>▼</small></a></span> <span class=gb2><a href="http://shenghuo.google.cn/shenghuo/search?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=w8" onclick=gbar.qs(this)>生活</a></span> <span class=gb2><a href="http://www.google.cn/rebang/search?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=w9" onclick=gbar.qs(this)>热榜</a></span> <span class=gb2><a href="http://daohang.google.cn/?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=wA" onclick=gbar.qs(this)>网站导航</a></span> <span class=gb2><div></div></a></span> <span class=gb2><a href="http://www.google.com/calendar/render?um=1&ie=UTF-8&sa=N&tab=wc">日历</a></span> <span class=gb2><a href="http://picasaweb.google.com/lh/searchbrowse?q=%E6%89%B6%E5%87%AF&um=1&ie=UTF-8&sa=N&tab=wq" onclick=gbar.qs(this)>照片</a></span> <span class=gb2><a href="http://docs.google.com/?um=1&ie=UTF-8&sa=N&tab=wo">文档</a></span> <span class=gb2><div></div></a></span> <span class=gb2><a href="http://www.google.cn/intl/zh-CN/options/">更多 »</a></span> </nobr></div><div class=gbh style=left:0></div><div class=gbh style=right:0></div><div align=right id=guser style="font-size:84%;padding:0 0 4px" width=100%><nobr><a href="https://www.google.com/accounts/Login?continue=http://www.google.cn/search%3Fq%3D%25E6%2589%25B6%25E5%2587%25AF&hl=zh-CN">登录</a></nobr></div><table class=tb style=clear:left width=100%><tr><form name=gs method=GET action="/search"><td class=tc valign=top><a href="http://www.google.cn/webhp?hl=zh-CN&complete=1" title="Google 首页"><img src="/images/logo_sm.gif" width=150 height=55 alt=Google border=0 vspace=12></a></td><td style="padding:0 0 7px;padding-left:8px" valign=top width=100%><table class=tb style="margin-top:25px"><tr><td class=tc nowrap><input type=hidden name=complete value=1><input type=hidden name=hl value="zh-CN"><input type=hidden name=newwindow value=1><input type=hidden name=ie value="GB2312"><input autocomplete="off" type=text name=q size=41 maxlength=2048 value="扶凯" title="Google 搜索"> <input type=submit name="btnG" value="Google 搜索"></td><td class=tc nowrap width=100%><span id=ap> <a href="/advanced_search?q=%E6%89%B6%E5%87%AF&complete=1&hl=zh-CN&newwindow=1&ie=UTF-8">高级搜索</a> | <a href="/preferences?q=%E6%89%B6%E5%87%AF&complete=1&hl=zh-CN&newwindow=1&ie=UTF-8">使用偏好</a></span></td></tr><tr><td class=tc colspan=2><font size=-1> <input id=all type=radio name=meta value="" checked><label for=all>所有网页 </label><input id=ch type=radio name=meta value="lr=lang_zh-CN|lang_zh-TW"><label for=ch>中文网页 </label><input id=lgr type=radio name=meta value="lr=lang_zh-CN"><label for=lgr>简体中文网页 </label><input id=cty type=radio name=meta value="cr=countryCN"><label for=cty>中国的网页 </label></font></td></tr></table></td></tr></form></table><script src="/extern_js/f/CgV6aC1DThICY24gDiswCjgDLA/sU0He6l7Lhs.js"></script><table border=0 cellpadding=0 cellspacing=0 width=100%><tr><td bgcolor="#3366cc"><img width=1 height=1 alt=""></table><table border=0 cellpadding=0 cellspacing=0 width=100% bgcolor="#d5ddf3"><tr><td nowrap><font size=+1> <b>网页 </b></font></td><td align=right nowrap><font size=-1>约有<b>6,840</b>项符合<b>扶凯</b>的查询结果，以下是第<b>1</b>-<b>10</b>项 （搜索用时 <b>0.23</b> 秒） </font></table><div id=res><div><div class=g> <a href="http://www.php-oa.com/" target=_blank class=l><font color="#cc0033">扶凯</font></a><table border=0 cellpadding=0 cellspacing=0><tr><td class="j"><div class=std>Centos,Ubuntu,Rhel,RHCE,<font color="#cc0033">扶凯</font>. <b>...</b> 消灭0回复Linux相关文章Jun 19th,2008<font color="#cc0033">扶凯</font>. Expires、Cache-Control、Last-Modified、ETag是RFC 2616（HTTP/1.1）协议中和网页缓存 <b>...</b><br><span class=a>www.php-oa.com/ - 33k - </span><nobr><a class=fl href="http://203.208.37.104/search?q=cache:rTKsFs8VC88J:
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