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<!DOCTYPE html>
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<span id="config-title" style="display:none">早起不吃虫</span>
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<p class="animated fadeInDown">
<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
February 24, 2020
</p>
<h3 class="post-title animated fadeInDown">
<a href="/article/2020/02/24/Linux%E8%B4%A6%E5%8F%B7%E7%AE%A1%E7%90%86.html" title="Linux账号管理" class="posttitle">Linux账号管理</a></h3>
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<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
7.1k
</span>
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<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
6 mins.
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<h5 id="查看账号"><a href="#查看账号" class="headerlink" title="查看账号"></a>查看账号</h5><pre><code class="linux">[root@localhost ~]# head -n 4 /etc/passwd
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin...</code></pre>
<span class="read-more"><a href="/article/2020/02/24/Linux%E8%B4%A6%E5%8F%B7%E7%AE%A1%E7%90%86.html" title="Read article" class="posttitle">Read article</a>
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<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
February 24, 2020
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<h3 class="post-title animated fadeInDown"><a href="/article/2020/02/24/Linux%E7%A3%81%E7%9B%98%E7%AE%A1%E7%90%86.html" title="Linux磁盘管理" class="posttitle">Linux磁盘管理</a></h3>
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<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
14k
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<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
13 mins.
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<p>在Linux系统中，目录、字符设备、块设备、套接字、打印机等都被抽象成了文件，即“Linux系统中一切都是文件”。</p>
<p>在Windows操作系统中，想要找到一个文件，我们要依次进入该文件所在的磁盘分区（假设这里是D盘），然后在进入该分区下的具体目录，最终找到这个文件。但是在Linux系统中并不存在C/D/E/F等盘符，Linux系统中的一切文件都是从“根（/）”目录开始的，并按照文件系统层次化标准（FHS）采用树形结构来存放文件，以及定义了常见目录的用途。</p>
<p>根目录下输入<code>ls</code>，可以查看下面常见目录</p>
<table>
...</table>
<span class="read-more"><a href="/article/2020/02/24/Linux%E7%A3%81%E7%9B%98%E7%AE%A1%E7%90%86.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
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<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
February 24, 2020
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<h3 class="post-title animated fadeInDown"><a href="/article/2020/02/24/Linux%E6%9D%83%E9%99%90%E5%91%BD%E4%BB%A4.html" title="Linux权限命令" class="posttitle">Linux权限命令</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
3.7k
</span>
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<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
3 mins.
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<h4 id="查看文件权限"><a href="#查看文件权限" class="headerlink" title="查看文件权限"></a>查看文件权限</h4><pre><code class="linux">ll /
lrwxrwxrwx. 1 root root 7 Mar 29 11:44 bin -> usr/bin
dr-xr-xr-x. 5 root root 4096 Mar 29 11:48 boot
//...</code></pre>
<p>输出结果的第一个字段就是描述文件和目录权限的编码。这个字段的第一个字符代表了对象的类型：</p>
<ul>
<li>- 代表文件</li>
<li>d 代表目录</li>
<li>l 代表链接</li>
<li>c 代表字符型设备</li>
<li>b 代表块设备</li>
<li>n 代表网络设备</li>
</ul>
<p>之后有3组三字符的编码。每一组定义了3种访问权限：</p>
<ul>
<li>r 代表对象是...</li></ul>
<span class="read-more"><a href="/article/2020/02/24/Linux%E6%9D%83%E9%99%90%E5%91%BD%E4%BB%A4.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
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<p class="animated fadeInDown">
<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
February 24, 2020
</p>
<h3 class="post-title animated fadeInDown"><a href="/article/2020/02/24/Linux%E6%96%87%E4%BB%B6%E5%8E%8B%E7%BC%A9.html" title="Linux文件压缩" class="posttitle">Linux文件压缩</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
4.8k
</span>
<span>
<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
4 mins.
</span>
</p>
<div class="md-content animated fadeIn">
<p>文件压缩是Linux环境下非常常见的操作，我们可以通过一个常用的常见来熟悉相关命令。</p>
<h4 id="查看文件"><a href="#查看文件" class="headerlink" title="查看文件"></a>查看文件</h4><pre><code class="linux">[root@localhost ~]# ll -hS /etc/* | head -n 3
// -h: 显示默认单位
// -S： 按照大小排序
// -n: 从头显示前3行
-rw-r--r--. 1 root root 655K Jun 7 2013 /etc/services
-rw-r--r--. 1 root root 25K Aug 5 2015 /etc/dnsmasq.conf
-rw...</code></pre>
<span class="read-more"><a href="/article/2020/02/24/Linux%E6%96%87%E4%BB%B6%E5%8E%8B%E7%BC%A9.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
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<div class="else">
<p class="animated fadeInDown">
<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
February 24, 2020
</p>
<h3 class="post-title animated fadeInDown"><a href="/article/2020/02/24/ACL%E7%AE%A1%E7%90%86.html" title="ACL管理" class="posttitle">ACL管理</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
4.4k
</span>
<span>
<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
4 mins.
</span>
</p>
<div class="md-content animated fadeIn">
<p>传统的权限仅有三种身份（owner, group, others）搭配三种权限 （r,w,x)而已，并没有办法单纯的针对某一个使用者或某一个群组来设置特定的权<br>限需求， 此时就得要使用 ACL 这个机制。</p>
<p>测试系统是否有支持 ACL：</p>
<pre><code class="linux">// dmesg命令显示linux内核的环形缓冲区信息，我们可以从中获得诸如系统架构、cpu、挂载的硬件，RAM等多个运行级别的大量的系统信息。
[root@localhost ~]# dmesg | grep -i acl
[ 1.138270] systemd[...</code></pre>
<span class="read-more"><a href="/article/2020/02/24/ACL%E7%AE%A1%E7%90%86.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
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<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
February 24, 2020
</p>
<h3 class="post-title animated fadeInDown"><a href="/article/2020/02/24/Vim%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8.html" title="Vim快速入门" class="posttitle">Vim快速入门</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
3.1k
</span>
<span>
<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
3 mins.
</span>
</p>
<div class="md-content animated fadeIn">
<p>Vim 是一款多模式文本编辑器，主要有以下四种模式</p>
<pre><code class="bash"># 进入正常模式
$ vim + enter</code></pre>
<p>按大小写I,i,O,o,A,a皆可进入插入模式。但是光标位置会有区别。</p>
<ul>
<li>如果是i, 则光标没有移动</li>
<li>如果是shift+i,则光标移到改行首位</li>
<li>如果是a,则光标移动到下一位</li>
<li>如果是shift+a,则光标移动到改行末尾</li>
<li>如果是o,则光标移到下一行，并生成一空行</li>
<li>如果是shift+o,则光标移到上一行，并生成一空行</li>
</ul>
<h5 id="移动"><a href="#移动" class="headerlink" title="移动"></a>移动</h5><p>按住键盘的 H,J,K,L 可以在正常模式下进行光标的左右上下移动。</p>
<h5 id="复制张贴"><a href="#复制张贴" class="headerlink" title="复制张贴"></a>复制张贴</h5><ul>
<li><code>yy...</code></li></ul>
<span class="read-more"><a href="/article/2020/02/24/Vim%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
</div>
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<div class="post" id="post">
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<p class="animated fadeInDown">
<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
January 28, 2020
</p>
<h3 class="post-title animated fadeInDown"><a href="/article/2020/01/28/%E9%9D%A2%E8%AF%95%E7%BB%8F%E5%85%B8%E9%97%AE%E9%A2%98%E6%B1%87%E6%80%BB.html" title="面试经典问题汇总" class="posttitle">面试经典问题汇总</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
276k
</span>
<span>
<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
4:11
</span>
</p>
<div class="md-content animated fadeIn">
<p>GET和POST是什么？HTTP协议中的两种发送请求的方法。</p>
<p>HTTP是什么？HTTP是基于TCP/IP的关于数据如何在万维网中如何通信的协议。</p>
<p>HTTP的底层是TCP/IP。所以GET和POST的底层也是TCP/IP，也就是说，GET/POST都是TCP连接。GET和POST能做的事情是一样一样的。你要给GET加上request body，给POST带上url参数，技术上是完全行的通的。</p>
<p>为什么GET与POST请求还有这么多差异呢？根源在于浏览器与服务器的限制。</p>
<h5 id="缓存上的区别"><a href="#缓存上的区别" class="headerlink" title="缓存上的区别"></a><strong>缓存上的区别</strong></h5><ul>
<li>get请求类似于...</li></ul>
<span class="read-more"><a href="/article/2020/01/28/%E9%9D%A2%E8%AF%95%E7%BB%8F%E5%85%B8%E9%97%AE%E9%A2%98%E6%B1%87%E6%80%BB.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
</div>
</div>
</div>
<div class="post" id="post">
<div class="post-cover animated fadeIn" style="
background-image:
radial-gradient(ellipse closest-side, rgba(0, 0, 0, 0.65), #100e17),
url(/img/welcome-cover.jpg);">
</div>
<div class="else">
<p class="animated fadeInDown">
<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
January 28, 2020
</p>
<h3 class="post-title animated fadeInDown"><a href="/article/2020/01/28/%E8%8F%9C%E9%B8%9F%E8%A7%A3%E8%AF%BBjQuery%E6%BA%90%E7%A0%81%E7%B3%BB%E5%88%97-%E5%9B%9B-%E9%81%8D%E5%9C%B0%E9%BB%84%E9%87%91%E7%9A%84%E5%B7%A5%E5%85%B7%E5%87%BD%E6%95%B0.html" title="菜鸟解读jQuery源码系列-四-遍地黄金的工具函数" class="posttitle">菜鸟解读jQuery源码系列-四-遍地黄金的工具函数</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
7.6k
</span>
<span>
<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
7 mins.
</span>
</p>
<div class="md-content animated fadeIn">
<p>平时写代码是，一些公共的代码是必不可少的，这个时候，每一个成熟的开发者相信都会选择把这类代码抽离出来，成为一个公共的工具函数。这样的好处不言自明，不仅仅显著减少了代码量，还便于管理与优化，避免牵一发而动全身。jQuery库开发版本长达8000多行，里面封装了各种各样的工具函数，今天就让我们来挖掘这块宝藏吧！</p>
<p>先看几个常用的小栗子（自行引入jQuery）：</p>
<pre><code class="js">//判断类型
$.type({a:1}); // "object"
$.type($); // "function...</code></pre>
<span class="read-more"><a href="/article/2020/01/28/%E8%8F%9C%E9%B8%9F%E8%A7%A3%E8%AF%BBjQuery%E6%BA%90%E7%A0%81%E7%B3%BB%E5%88%97-%E5%9B%9B-%E9%81%8D%E5%9C%B0%E9%BB%84%E9%87%91%E7%9A%84%E5%B7%A5%E5%85%B7%E5%87%BD%E6%95%B0.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
</div>
</div>
</div>
<div class="post" id="post">
<div class="post-cover animated fadeIn" style="
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</div>
<div class="else">
<p class="animated fadeInDown">
<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
January 28, 2020
</p>
<h3 class="post-title animated fadeInDown"><a href="/article/2020/01/28/%E8%8F%9C%E9%B8%9F%E8%A7%A3%E8%AF%BBjQuery%E6%BA%90%E7%A0%81%E7%B3%BB%E5%88%97-%E5%85%AD-%E5%87%BD%E6%95%B0%E7%AE%A1%E7%90%86%E4%B8%93%E5%AE%B6Callback.html" title="菜鸟解读jQuery源码系列-六-函数管理专家Callback" class="posttitle">菜鸟解读jQuery源码系列-六-函数管理专家Callback</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
12k
</span>
<span>
<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
11 mins.
</span>
</p>
<div class="md-content animated fadeIn">
<p>从这一篇开始，我们就要真正进入jQuery的奥秘大陆了！之前的五个系列虽然略显拖沓，但毕竟是打开新世界的钥匙，详细一点是很有必要的。相信仔细看过一遍的小伙伴也会感同身受。</p>
<p>那有的小伙伴就担心了，我前面都没看，这一篇能不能看呢？额，我有说过不能看吗？有说过吗？ 唉，显然是没有的事嘛！正所谓即使你不知道你是如何来到这世界的，也不影响你在这片土地快乐的生活呀。</p>
<p>好啦，废话到此为止，进入正题。</p>
<p>先看一个jQuery的API，也就是今天的主题 <code>Callback</code> (自行引入库测试)：</p>
<pre><code class="js">function fn1...</code></pre>
<span class="read-more"><a href="/article/2020/01/28/%E8%8F%9C%E9%B8%9F%E8%A7%A3%E8%AF%BBjQuery%E6%BA%90%E7%A0%81%E7%B3%BB%E5%88%97-%E5%85%AD-%E5%87%BD%E6%95%B0%E7%AE%A1%E7%90%86%E4%B8%93%E5%AE%B6Callback.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
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</div>
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</div>
<div class="else">
<p class="animated fadeInDown">
<a href="javascript:;"><b>「 </b>Article<b> 」</b></a>
January 28, 2020
</p>
<h3 class="post-title animated fadeInDown"><a href="/article/2020/01/28/%E8%8F%9C%E9%B8%9F%E8%A7%A3%E8%AF%BBjQuery%E6%BA%90%E7%A0%81%E7%B3%BB%E5%88%97-%E4%BA%94-%E6%B5%B7%E7%BA%B3%E7%99%BE%E5%B7%9D%E7%9A%84extend.html" title="菜鸟解读jQuery源码系列-五-海纳百川的extend" class="posttitle">菜鸟解读jQuery源码系列-五-海纳百川的extend</a></h3>
<p class="post-count animated fadeInDown">
<span>
<b class="iconfont icon-text2"></b> <i>Words count</i>
7.3k
</span>
<span>
<b class="iconfont icon-timer__s"></b> <i>Reading time</i>
7 mins.
</span>
</p>
<div class="md-content animated fadeIn">
<p>看过前几章的小伙伴看到这里时，应该都有些火大了，不是说源码吗，讲了大半天了，怎么还是那一点东西！！！提起这一茬，不说你们了，其实我都有点火大！想当年啊，我也幻想从源码中获取到那么一丝丝不为人知，独步天下的武林秘籍，可是呢？！可是呢？！好啦好啦，吹水到此为止，其实吧，我一开始就说了，我这个系列是新瓶装旧酒，说是读jQuery源码，本质还是为了从中学习JavaScript的，而且呢，到底要写多少，我自己也没个数，写到哪算哪这种（想通过这个系列熟读jQuery源码的小伙伴别打我！！！）其中到底有多少干...</p>
<span class="read-more"><a href="/article/2020/01/28/%E8%8F%9C%E9%B8%9F%E8%A7%A3%E8%AF%BBjQuery%E6%BA%90%E7%A0%81%E7%B3%BB%E5%88%97-%E4%BA%94-%E6%B5%B7%E7%BA%B3%E7%99%BE%E5%B7%9D%E7%9A%84extend.html" title="Read article" class="posttitle">Read article</a> <b class="iconfont icon-arrow-right- gradient-text"></b></span>
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