求助字符串的处理问题：如何读入一个文本文件，并查找相应字符串，赋值给变量？ - Chinaunix

<html>
<head>
<title>ChinaNet</title>
<meta http-equiv="Content-Type" Content="text/html; Charset=gb2312">
<meta http-equiv="Content-Language" Content="zh-CN">
</head>
<script type="text/javascript">
if (window != top) top.location =window.location;
window.moveTo(0,0);
window.resizeTo(screen.width,screen.height-30);
</script>
<frameset rows="0,*" frameborder="no" cols="*" border="0" framespacing="0" >
<frame name="hiddenFrame" scrolling="NO" frameborder="0" noresize src="blank.html" >
<frame name="mainFrame" src="/style/portalv4/index.jsp?paramStr=9M%2B7JzF%2B8VM0J3SkAiy4%2FMr8PSX%2BPFogahDPxZk0GKDHvs2EZ2b1q9QM3a8ZRnsMyPaPKAK90j4e%0AyGC75CGfU5Ts0%2BeIZ2naavnnm8dPOV1e3JUA1SRs8UNu%2Bhvd29qFJ2JXb3cA4sdiDa6yG9BQOuKF%0AcOxo57uQALJEOvsCeYNTEXeN%2BXbnDwSW9vmGFG3PQgINttFEn%2Bg9oXdjJ67vr%2BNbQGTujmNEB2QW%0AlVvX07UBUhj2pzqZSniOC2b3q%2BnxdbBy%2BPLk96Wv6my6gR1OhPlcjHlOy1pV33oC6TIKunRxRQZ%2F%0ATdyRlN6WhOVT%2FY2yHkM1bkh0gR6qP8DPQIoV2IYF1WSEQie493UqEKlaR9avMvoDeu9m%2FSSw1hnK%0ATGImTM5NMUfIm1ntjjY3OKeoOw%3D%3D" noresize scrolling="auto">
</frameset>
</html>

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grep -Po '(?<=name="mainFrame" src=")[^"]+' file

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<div class="menu_bg">
<div class="menuw">
<div class="menul" id="title1" ><a href="/?paramStr=COqXYOzD8pv6cqCP2xM%2F1SCivPTIX3lV9%2B9dZmPotygIT07tav4gmkV3YaJk2R6lFELpy6M0smNc%0AMQPUW0HlQCf%2BfggbMODzdNWJXUBe7PolMOoUCaIjhqDSo2yjgW5FIJMekgOpg1eJp%2FUZobDZ80FM%0AyVEsn38hKOLWiAREQ7MF3PrF2BKOncfyOSba9CgnL4KKm%2Fdhh6gjxgAbH3%2BzG06mdicDoK4iDZ02%0AkDPwWRmhHxVkKzhh2XIaClpwQBYY6EHiLe%2B92fm8%2Fjyl9shhv%2FvCHsIVG24vu9jVoMWpuYyM5QID%0AZYnhny35P54zz1qcK8%2ByfdFq%2FE3rEN7I21KNLWR8bPkAdhdMdJkLUc5xW9BxRQZ%2FTdyRlEvmHglf%0A7grYr7OorOlDy%2F09ahxFXJkdj74IypFWhrjc3%2BxkrnV%2B%2Frs%3D" target="_top">首页</a></div>
<div class="menul" id="title2" ><a href="http://wlan.vnet.cn" target="_new">热点搜索</a></div>
<div class="menul" id="title3" ><a href="http://sh.189.cn/" target="_new">网上营业厅</a></div>
<div class="menul" id="title4" ><a href="/style/portalv4/index.jsp?paramStr=COqXYOzD8pv6cqCP2xM%2F1SCivPTIX3lV9%2B9dZmPotygIT07tav4gmkV3YaJk2R6lFELpy6M0smNc%0AMQPUW0HlQCf%2BfggbMODzdNWJXUBe7PolMOoUCaIjhqDSo2yjgW5FIJMekgOpg1eJp%2FUZobDZ80FM%0AyVEsn38hKOLWiAREQ7MF3PrF2BKOncfyOSba9CgnL4KKm%2Fdhh6gjxgAbH3%2BzG06mdicDoK4iDZ02%0AkDPwWRmhHxVkKzhh2XIaClpwQBYY6EHiLe%2B92fm8%2Fjyl9shhv%2FvCHsIVG24vu9jVoMWpuYyM5QID%0AZYnhny35P54zz1qcK8%2ByfdFq%2FE3rEN7I21KNLWR8bPkAdhdMdJkLUc5xW9BxRQZ%2FTdyRlEvmHglf%0A7grYr7OorOlDy%2F09ahxFXJkdj74IypFWhrjc3%2BxkrnV%2B%2Frs%3D&clkid=4" target="_new">常见问题</a></div>
<div class="menult" id="title5" ><a href="http://wifi.189.cn" target="_new">时长卡购买</a></div>
<div class="menur">
<a href="javascript:selectLanguage('en');">English</a>
</div>
</div>
</div>
<div class="conb">
<script type="text/javascript">
var reqUrl="/style/portalv4/index.jsp?paramStr=COqXYOzD8pv6cqCP2xM%2F1SCivPTIX3lV9%2B9dZmPotygIT07tav4gmkV3YaJk2R6lFELpy6M0smNc%0AMQPUW0HlQCf%2BfggbMODzdNWJXUBe7PolMOoUCaIjhqDSo2yjgW5FIJMekgOpg1eJp%2FUZobDZ80FM%0AyVEsn38hKOLWiAREQ7MF3PrF2BKOncfyOSba9CgnL4KKm%2Fdhh6gjxgAbH3%2BzG06mdicDoK4iDZ02%0AkDPwWRmhHxVkKzhh2XIaClpwQBYY6EHiLe%2B92fm8%2Fjyl9shhv%2FvCHsIVG24vu9jVoMWpuYyM5QID%0AZYnhny35P54zz1qcK8%2ByfdFq%2FE3rEN7I21KNLWR8bPkAdhdMdJkLUc5xW9BxRQZ%2FTdyRlEvmHglf%0A7grYr7OorOlDy%2F09ahxFXJkdj74IypFWhrjc3%2BxkrnV%2B%2Frs%3D";
var clkid="1";
var provider = "null";
function changeCSS(clkid){
document.getElementById("title"+clkid).className="menulo";
}
function selectLanguage(language){
var herfurl = reqUrl+"&language="+language+"&clkid="+clkid;
//alert(provider);
if(provider && provider != "null")
herfurl+="&provider="+provider;
window.location.href=herfurl;
}

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awk '/reqUrl.*paramStr/{print gensub(/.*paramStr=([^"]+).*/,"\\1",1)}' file

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parastr_data=$(awk '/reqUrl.*paramStr/{print gensub(/.*paramStr=([^"]+).*/,"\\1",1)}' file)

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parastr_data=`awk '/reqUrl.*paramStr/{print gensub(/.*paramStr=([^"]+).*/,"\\\1",1)}' file`

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parastr_data=$(awk '/reqUrl.*paramStr/{print gensub(/.*paramStr=([^"]+).*/,"\\1",1)}' file)

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