来一发shell步伐猎取互联网公司web server 信息

如果您觉得本篇CentOSLinux教程讲得好，请记得点击右边漂浮的分享程序，把好文章分享给你的好朋友们！一.成绩来历
想失掉以后互联网公司的webserver是哪一个范例的？(ApacheNginxLighttpd)以是编写此步伐。次要统计百度Googlealibabatencent(qq)taobaorenrensina京东凡客yahoo昌大网易搜狐畅游等公司的webserver。固然，也有大概失掉的是反向代办署理办事器。这得详细看公司的背景体系架构了。

二.步伐
1.源码
viab.sh

[c-sharp]viewplaincopyhttp://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf

• #!/bin/bash
  
• #authorlongxibendi
  
• #bloghttp://blog.csdn.net/longxibendi
  
• #functiongetthewebserversinformationofcompanies
  
• if[-e/tmp/web_server.log];then
  
• rm-f/tmp/web_server.log
  
• fi
  
• if[-e/tmp/ab.log];then
  
• rm-f/tmp/ab.log
  
• fi
  
• forcompany_nameintaobao360buydangdangvanclmbaobaoalibaba谷歌百度yahoosinasohuren
  
• renchangyouwanmeisdo126163139
  
• do
  
• {
  
• ab-n1-c1http://www.${company_name}.com/index.html|tee/tmp/ab_${company_name}.log2>&1
  
• if[$?-eq0];then
  
• printf"%15s,%20s/n""${company_name}.com","`cat/tmp/ab_${company_name}.log|grep"Server
  
• Software"`">>/tmp/web_server.log
  
• fi
  
• sleep2
  
• }&
  
• done
  
• wait
  
• echo"ItisOK"
  

2.申明&实行步伐
经由过程ab网站主页，然后把失掉信息重定向到一个文件中，然后再从该文件中过滤信息，一致纪录到/tmp/web_server.log中

[c-sharp]viewplaincopyhttp://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf

• [root@localhostDesktop]#chmoda+xab.sh
  
• [root@localhostDesktop]#./ab.sh>/dev/null
  

3.实行了局,经由过程检察/tmp/web_server.log失掉网站webserver信息(有多是反向代办署理办事器)

[c-sharp]viewplaincopyhttp://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf

• [root@localhostDesktop]#cat/tmp/web_server.log
  
• 360buy.com,,ServerSoftware:jdws
  
• taobao.com,,ServerSoftware:nginx
  
• mbaobao.com,,ServerSoftware:
  
• 百度.com,,ServerSoftware:BWS/1.0
  
• renren.com,,ServerSoftware:nginx/0.7.67
  
• 谷歌.com,,ServerSoftware:gws
  
• changyou.com,,ServerSoftware:Apache
  
• sina.com,,ServerSoftware:Apache/2.0.63
  
• alibaba.com,,ServerSoftware:Apache/2.2.15
  
• 126.com,,ServerSoftware:Apache
  
• vancl.com,,ServerSoftware:Microsoft-IIS/6.0
  
• wanmei.com,,ServerSoftware:nginx
  
• sdo.com,,ServerSoftware:SVS
  
• sohu.com,,ServerSoftware:SWS
  
• dangdang.com,,ServerSoftware:nginx/0.7.61
  
• yahoo.com,,ServerSoftware:YTS/1.20.0
  
• 139.com,,ServerSoftware:Apache
  
• 163.com,,ServerSoftware:nginx
  

4.复杂剖析了局
sohu.com用的webserver是SWS(这个有多是本人开辟的，有多是用的SWS)
谷歌.com用的webserver是gws
百度.com用的webserver是BWS
taobao.com用的webserver是nginx
另有良多，看3的了局


三.伪多线程与单历程剧本对照
1.先看单历程的步伐
vi1_ab.sh

[c-sharp]viewplaincopyhttp://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf

• #!/bin/bash
  
• #authorlongxibendi
  
• #bloghttp://blog.csdn.net/longxibendi
  
• #functiongetthewebserversinformationofcompanies
  
• if[-e/tmp/web_server.log];then
  
• rm-f/tmp/web_server.log
  
• fi
  
• if[-e/tmp/ab.log];then
  
• rm-f/tmp/ab.log
  
• fi
  
• forcompany_nameintaobao360buydangdangvanclmbaobaoalibaba谷歌百度yahoosinasohurenrenchangyouwanmeisdo126163139
  
• do
  
• #{
  
• ab-n1-c1http://www.${company_name}.com/index.html|tee/tmp/ab.log2>&1
  
• if[$?-eq0];then
  
• printf"%10s,%20s/n""${company_name}.com","`cat/tmp/ab.log|grep"ServerSoftware"`">>/tmp/web_server.log
  
• fi
  
• #sleep3
  
• #}&
  
• done
  
• wait
  
• echo"ItisOK"
  

2.申明
下面的单历程步伐，只用一个历程完成，很复杂就不注释了。详细统计webserver完成与伪多线程步伐相似

3.两步伐实行效力对照

[c-sharp]viewplaincopyhttp://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf

• [root@localhostDesktop]#time-p./1_ab.sh>/dev/null
  
• real12.54
  
• user0.03
  
• sys1.74
  
• [root@localhostDesktop]#time-p./ab.sh>/dev/null
  
• real11.20
  
• user0.07
  
• sys2.00
  

4.剖析
能够看到伪多线程步伐分明比单历程步伐快
实在，假如在实行ab.sh的时分能够ps-ef|grepab.sh一下，就会发明分歧了

<divclass="dp-highlighterbg_c-sharp"style="font-family:Consolas,CourierNew,Courier,mono,serif;background-color:rgb(231,229,220);width:700.9166870117188px;overflow:auto;padding-top:1px;margin:18px0px!important;">[c-sharp]viewplaincopyhttp://static.blog.csdn.net/scripts/ZeroClipboard/ZeroClipboard.swf


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如果一定要用500以上的字来解释“晦涩”这个词，那么LZ是做到了的。

我感觉linux的学习,学习编程~!~!就去学习C语言编程!!

放手去搞。尽量不要提问，运用搜索找答案，或者看wiki，从原理上理解操作系统的本质，而不是满足于使用几个技巧。尽量看英文资料。

Linux?最大的优点在于其作为服务器的强大功能，同时支持多种应用程序及开发工具，所以Linux操作系统有着广泛的应用空间。

了解Linux的网络安全，系统的安全，用户的安全等。安全对于每位用户，管理员来说是非常重要的。

对Linux命令熟悉后，你可以开始搭建一个小的Linux网络，这是最好的实践方法。Linux是网络的代名词，Linux网络服务功能非常强大，不论是邮件服务器、Web服务器、DNS服务器等都非常完善。

说实话小时候没想过搞IT，也计算机了解也只是一些皮毛，至于什么UNIX，Linux，听过没见过，就更别说用过了。?