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      ["text"]=>
      string(45) "安全测试前置实践1-白盒&黑盒扫描"
      ["intro"]=>
      string(411) "本文我们将以围绕系统安全质量提升为目标，讲述在安全前置扫描上实践开展过程。希望通过此篇文章，帮助大家更深入、透彻地了解安全测试，能快速开展安全测试。
    

作者：京东物流 陈维
一、引言
G.J.Myers在《软件测试的艺术》中提出：从心理学角度来说，测试是一个为了寻找错误而运行程序的过程。
"
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      ["intro"]=>
      string(256) "准备：

攻击机：虚拟机kali、本机win10。
靶机：Orasi: 1，下载地址：https://download.vulnhub.com/orasi/Orasi.ova，下载后直接vbox打开即可。
知识点：hex编码、ida逆向、AndroidKiller逆向、ffuf爆破、ssti漏洞、s"
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      ["intro"]=>
      string(428) "在使用Kafka的过程中，消费者断掉之后，再次开始消费时，消费者会从断掉时的位置重新开始消费。
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      ["intro"]=>
      string(194) "论文信息

论文标题：Attract, Perturb, and Explore: Learning a Feature Alignment Network for Semi-supervised Domain Adaptation论文作者：Taekyung Kim论文来源：2020 ECCV论文地"
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D"
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在开发中我们有时候需要每隔 一段时间发送一次电子邮件，或者在某个特定的时间进行发"
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问题分析:
随着互联网以及移动互联网的发展，应用系统的数据量也是成指数式增长，若采用单数据库进行数据存储，存在以下性能瓶颈：
IO瓶颈：热点数据太多，数据库缓存不足，产生大量磁盘IO，效率较低。请求数据太多，带宽不够，网络IO瓶颈。CPU瓶颈：排序、分组、连接查询、聚合统计等SQL会耗费"
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      string(292) "话接上篇 [ASP.NET Core - 缓存之内存缓存(上)]，所以这里的目录从 2.4 开始。

2.4 MemoryCacheEntryOptions
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                        <h1 class="page-title"><a href="/show-203277696.html" title="第七课预习笔记">第七课预习笔记</a></h1>
            
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<p></p>
<p>第七次课预习内容<br>
6.1 压缩打包介绍<br>
6.2 gzip压缩工具<br>
6.3 bzip2压缩工具 <br>
6.4 xz压缩工具<br>
6.5 zip压缩工具<br>
6.6 tar打包<br>
6.7 打包并压缩<br>
看下这个帖子： http://ask.apelearn.com/question/5435</p>
<hr>
<p> <strong>压缩打包</strong></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpJNE55ODNNbU00WVdFd1pURTRaR1k1WkRNelpUTXdaV0U1TmpjMVl6YzJORE01Wmk1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpnek1TODBNekE0WW1NeU5qSXlaV1V4TkRVeVpXSXpNRGd6TURsak9XWmxNMkl5Tnk1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpJNU55OWhOelZqT0RFek5ESTNNbUk1WlRsaFpEVTJaVGRoWldJMU16TTJOak5pTVM1d2JtYz0=" title="第七课预习笔记"> </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpVeU55OW1ZVGRtTXpkbE1XVXpOakF3T0RCbU1qaGlNVE5pTVRRNE0yWTNZV1JqWmk1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpReU1pODFNbU0zWlRZeU5qVXlNR0ZsTUdRek5EVTFZekZpTTJJNU5qRXhZbVE1WlM1d2JtYz0=" title="第七课预习笔记"> </p>
<p>压缩前是2.0M，压缩后是410K。</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THprME15OWpNR015WkRGa01ESmhaR1kwTmpnd1l6UmtOek5pWW1JM1kySTJNbU0xWmk1d2JtYz0=" title="第七课预习笔记"> </p>
<p>将1.txt.gz解压，文件大小变为 1.7M。将虚的空间挤掉了。</p>
<p>默认压缩级别是6，一共9个级别。也可以指定，gzip -1 1.txt。压缩后的大小比原来大。</p>
<p> <img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpneU1pOHpZekkyWW1FMU5XSTBOVEptTnpka1ltTXlaRGMyTVRrelpEUXlNVFl3WlM1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpJdk9HVmtZbU00WkRaaE56aG1OVEU0T0dObU1UUmpNR0kyTnpOaVltRmhOVEl1Y0c1bg==" title="第七课预习笔记"></p>
<p> 查看压缩文件信息</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpNNE5pOWxaVEUyTVRJd01EQTFOek0yTjJRNE5HUmlZbUl5WlRGak1tUmlNR0l6WVM1d2JtYz0=" title="第七课预习笔记"></p>
<p>zcat 1.txt.gz 查看压缩文件内容</p>
<p>若想将文件压缩到别的目录并且不删除源文件，使用-c参数。</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THprM01pODVZVEV6TlRrNVlUbGtNMll3TURGak5qVTBaVFEzT0RFeVpESTRaR1ZoWXk1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THprMEwyVTFNMlZtTkRVM09UWTNPV1ZtT1RNd1pERTVNVGcxT1RZMU1UQmhZVE5sTG5CdVp3PT0=" title="第七课预习笔记"> </p>
<p>解压也可以同样操作</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpjM015OWxORGhpWVdJNE16TTFOR1V5WkRka05EWTFPRE13WkdOaU16UXpPVGhsTlM1d2JtYz0=" title="第七课预习笔记"> </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpreE5DODBZMlEyWkRNMk9HSm1NamcwTkdJellqQmtZVGd3TkdKaU9EaGlNVGt4WVM1d2JtYz0=" title="第七课预习笔记"></p>
<p>用法与gzip类似</p>
<p>首先安装bizp2</p>
<p> <img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpVeU9DOHdabVUyWXpNM1l6WTNOVFU0WTJFM05UVTRabVZpWXpVMU1EZ3daR0ZtT0M1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpZeU5DODNObUppWkRVd09EQTVZVE01WmpsalltTmxPVGN6TTJZMVl6TTNPV1U1T0M1d2JtYz0=" title="第七课预习笔记"></p>
<p>可以看到bzip2压缩的更狠 </p>
<p> <img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpnMU5DODJZbUUxWkRJd1ltSTNabU0yWlROaE1qZzRabVZrT0RWak5HUXpOak00Tmk1d2JtYz0=" title="第七课预习笔记"></p>
<p>使用bzip2 -d 或者bunzip2来解压缩</p>
<p> <img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpRME9TOWxPREUyTXpZeFlqRXlNV013WkdWbVpERXpNalk0WkRJNU5qUmtOemM0T1M1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpnME1DOHpOV1E0WkRrME5UQXlPV0l3T0dFMVptTTRZamt3WXpVeU5EbGlOV1l5TUM1d2JtYz0=" title="第七课预习笔记"> </p>
<p>其余用法与gzip类似。 </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpRNU1TOWhNelprTnpNM016VTROelkxTmprNE9UUTFNakF6WldKa01qRTVZbVEzWWk1d2JtYz0=" title="第七课预习笔记"></p>
<p>用法与gzip 和bzip2基本一样。压缩比bzip2狠，bizp2比gzip狠，但是狠的同时耗费更多的cpu。</p>
<p> <img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpRM055OHpZemhqWlRWak5tSTRaREppTldVMFlURmlZekkwTnpZMU5qWTNNR1kxTlM1d2JtYz0=" title="第七课预习笔记"></p>
<p> xz-d和unxz都可以解压</p>
<p>也支持-c</p>
<p>也支持xzcat</p>
<p> </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpnMU9TODFOV0l5TURVNU9URTJZalppTURSaE1XUmpNelk1TUdSbFpUQmpOVFJtTXk1d2JtYz0=" title="第七课预习笔记"></p>
<p>zip支持压缩目录</p>
<p>首先安装zip</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpFeE1pODJaVE0xTjJVME9ERXhOak00WXpNd00yRmxNV0V4TmpVNFltRXpZVE5sT0M1d2JtYz0=" title="第七课预习笔记"> </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THprMk1DOWpOVGcyWkRNeU5XWTNOemszWWpjek1qY3hOVE14TVdGbU9EVTJPV1U0TUM1d2JtYz0=" title="第七课预习笔记"> </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpreE9TOWlOMkV4TnpjeE5UazFPV001WVRGbE5UVmxOall3TldGaE9UZzNZemRtTnk1d2JtYz0=" title="第七课预习笔记"> </p>
<p>压缩目录 -r </p>
<p> zip压缩完，原文件不删除。</p>
<p> 解压到指定目录 -d</p>
<p>看文件列表 -l</p>
<p> </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpZMUx6Y3dNVEkyTkdRME5tUTRZelkyWVRnM05UQTJaREJrWkdOak56Tm1NVFl4TG5CdVp3PT0=" title="第七课预习笔记"></p>
<p>打包目录</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpRd05TOHdPR0UzTURNME1XRTBOamt4TmpBd1ptWXdObUUwT0RNMFlqUTBNREkxTlM1d2JtYz0=" title="第七课预习笔记"> </p>
<p>解包</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpZeU15ODROekZtWmpFeE5UYzJORFF5TnpnMU5qa3hPVFE0WVRrMVpUTmpNVEJpWmk1d2JtYz0=" title="第七课预习笔记"></p>
<p>打包目录+文件</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpJME1TOWpPVFE0TkRFellUbGxOVFpoWTJSbE1qQXdNMkprT1RKaE9URmxOVFppTVM1d2JtYz0=" title="第七课预习笔记"></p>
<p>查看压缩包文件列表</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpVd09TOWtaV1JrTjJZNE4yRmtOekJsWkRBME9HUTFNakpsTnpCaU1XWmxNR001TlM1d2JtYz0=" title="第七课预习笔记"></p>
<p>过滤指定目录，即不打包指定目录</p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpFeU5pODJZVGd6WWpBNVpHRTBOVGRrTm1JNFkySTBZekUzWkdNNVptSTVPVGM1Tmk1d2JtYz0=" title="第七课预习笔记"> </p>
<p> </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THprNU1DOHdZalV3T0dFeE16WmhOV1psWmpJeVpHTTNZbUpqTldFMU16RTVaR0ZoTmk1d2JtYz0=" title="第七课预习笔记"></p>
<p>打包并压缩成不同类型的压缩文件 </p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THprM015OHpPRGhqTURkbU1XSTFZbU0wTnpCaU9URXdaVE0zTURjNE56TmlZMk0yWkM1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpZeU5pODROVFV5Tm1Sa09ETXlZVFk1T0RSbVl6Vm1Zak0wTlRjeE1URTBZMkUyTWk1d2JtYz0=" title="第七课预习笔记"></p>
<p><img alt="第七课预习笔记" src="/default/index/img?u=L2RlZmF1bHQvaW5kZXgvaW1nP3U9YUhSMGNITTZMeTl3YVdGdWMyaGxiaTVqYjIwdmFXMWhaMlZ6THpFNU1TODRZbVUyTmpZeFltWTNPRGc0WlRKbU9EVXdZalZqWlRsaVlXTmtaVEUwTnk1d2JtYz0=" title="第七课预习笔记"></p>
<p>解包将cvf改为xvf即可。</p>
 
                    
            
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