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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="renderer" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=edge" >
<link rel="dns-prefetch" href="http://yoursite.com">
<title>plusice</title>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<meta property="og:type" content="website">
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<link rel="stylesheet" type="text/css" href="/./main.1cff29.css">
<style type="text/css">
#container.show {
background: linear-gradient(200deg,#a0cfe4,#e8c37e);
}
</style>
</head>
<body>
<div id="container" q-class="show:isCtnShow">
<canvas id="anm-canvas" class="anm-canvas"></canvas>
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<div class="intrude-less">
<header id="header" class="inner">
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<img src="/images/avatar.jpg" class="js-avatar">
</a>
<hgroup>
<h1 class="header-author"><a href="/">plusice</a></h1>
</hgroup>
<nav class="header-menu">
<ul>
<li><a href="/">主页</a></li>
</ul>
</nav>
<nav class="header-smart-menu">
<a q-on="click: openSlider(e, 'innerArchive')" href="javascript:void(0)">所有文章</a>
<a q-on="click: openSlider(e, 'friends')" href="javascript:void(0)">友链</a>
</nav>
<nav class="header-nav">
<div class="social">
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</div>
</nav>
</header>
</div>
</div>
<div class="mid-col" q-class="show:isShow,hide:isShow|isFalse">
<nav id="mobile-nav">
<div class="overlay js-overlay" style="background: #4d4d4d"></div>
<div class="btnctn js-mobile-btnctn">
<div class="slider-trigger list" q-on="click: openSlider(e)"><i class="icon icon-sort"></i></div>
</div>
<div class="intrude-less">
<header id="header" class="inner">
<div class="profilepic">
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</div>
<hgroup>
<h1 class="header-author js-header-author">plusice</h1>
</hgroup>
<nav class="header-nav">
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</div>
</nav>
<nav class="header-menu js-header-menu">
<ul style="width: 50%">
<li style="width: 100%"><a href="/">主页</a></li>
</ul>
</nav>
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<div class="mobile-mask" style="display:none" q-show="isShow"></div>
</nav>
<div id="wrapper" class="body-wrap">
<div class="menu-l">
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<canvas data-colors="#eaeaea" data-sectionHeight="100" data-contentId="js-content" id="myCanvas1" class="anm-canvas"></canvas>
</div>
<div id="js-content" class="content-ll">
<article id="post-微信小游戏申请指南" class="article article-type-post article-index" itemscope itemprop="blogPost">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2019/01/24/微信小游戏申请指南/">微信小游戏从开发到上线</a>
</h1>
<a href="/2019/01/24/微信小游戏申请指南/" class="archive-article-date">
<time datetime="2019-01-23T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2019-01-24</time>
</a>
</header>
<div class="article-entry" itemprop="articleBody">
<p>经过一段时间的折腾，差不多把之前做的小游戏想搞的给搞了，现在已经在微信小游戏上线，并且接入了广告，不过广告还在审核中。这里分享一下从开发、申请上线到接入广告等几个流程的一些问题。阅读之前可以扫码先玩一玩哈哈。</p>
<p><img src="/images/chicken.jpg" alt="扫码玩一玩"></p>
<ul>
<li><a href="#游戏申请">游戏申请</a></li>
<li><a href="#游戏开发">游戏开发</a></li>
<li><a href="#接入广告">接入广告</a></li>
</ul>
<h2 id="游戏申请"><a href="#游戏申请" class="headerlink" title="游戏申请"></a>游戏申请</h2><p>我把游戏申请放在了第一步，这是因为微信小游戏还在开发阶段就可以申请对应的微信公众平台账号并且给小游戏命名了，需要注意的是一个小游戏/小程序/公众号只能对应一个账号，一个账号对应一个邮箱，你如果有另外一个服务，你必须开通另外一个账号。</p>
<a class="article-more-a" href="/2019/01/24/微信小游戏申请指南/#more">more >></a>
</div>
<div class="article-info article-info-index">
<p class="article-more-link">
<a class="article-more-a" href="/2019/01/24/微信小游戏申请指南/">展开全文 >></a>
</p>
<div class="clearfix"></div>
</div>
</div>
</article>
<article id="post-小白快速上手微信小游戏开发" class="article article-type-post article-index" itemscope itemprop="blogPost">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2018/11/13/小白快速上手微信小游戏开发/">小白快速上手微信小游戏开发</a>
</h1>
<a href="/2018/11/13/小白快速上手微信小游戏开发/" class="archive-article-date">
<time datetime="2018-11-12T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-11-13</time>
</a>
</header>
<div class="article-entry" itemprop="articleBody">
<p>最近工作不是很忙，利用业余时间做了一个微信小游戏，目前正在申请软著登记阶段（mmp的天朝政策）。过程中做了一些笔记，在这里记录下来，当作一个小白的快速上手介绍，对已经有经验的不具备参考价值。我是使用Cocos Creator开发的，本文内容将分成两部分，一部分是对Cocos Creator做一个重要概念的介绍，另一部分是列出微信小游戏开发的一些注意点。</p>
<h3 id="Cocos-Creator"><a href="#Cocos-Creator" class="headerlink" title="Cocos Creator"></a>Cocos Creator</h3><blockquote>
<p>Cocos Creator是一个完整的游戏开发解决方案，包括了 cocos2d-x 引擎的 JavaScript 实现（不需要学习一个新的引擎），以及能让你更快速开发游戏所需要的各种图形界面工具。完全为引擎定制打造，包含从设计、开发、预览、调试到发布的整个工作流所需的全功能一体化编辑器。目前支持发布游戏到 Web、iOS、Android、各类”小游戏”、PC 客户端等平台，真正实现一次开发，全平台运行。</p>
</blockquote>
<p>——<a href="https://docs.cocos.com/creator/manual/zh/" target="_blank" rel="external">Cocos Creator 用户手册</a></p>
<a class="article-more-a" href="/2018/11/13/小白快速上手微信小游戏开发/#more">more >></a>
</div>
<div class="article-info article-info-index">
<div class="article-tag tagcloud">
<i class="icon-price-tags icon"></i>
<ul class="article-tag-list">
<li class="article-tag-list-item">
<a href="javascript:void(0)" class="js-tag article-tag-list-link color1">javascript</a>
</li>
</ul>
</div>
<p class="article-more-link">
<a class="article-more-a" href="/2018/11/13/小白快速上手微信小游戏开发/">展开全文 >></a>
</p>
<div class="clearfix"></div>
</div>
</div>
</article>
<article id="post-2018-08-28-JavaScript栈内存空间" class="article article-type-post article-index" itemscope itemprop="blogPost">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2018/09/29/2018-08-28-JavaScript栈内存空间/">JavaScript栈内存空间，限制了递归次数的元凶</a>
</h1>
<a href="/2018/09/29/2018-08-28-JavaScript栈内存空间/" class="archive-article-date">
<time datetime="2018-09-28T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-09-29</time>
</a>
</header>
<div class="article-entry" itemprop="articleBody">
<p>最近在看《深入理解计算机系统》一书，从进程虚拟存储的用户栈和运行时堆可以了解到，进程在开始执行的时候会分配一份较小的内存作为用户栈，而运行时堆会在执行时动态分配内存，相比于栈内存来说堆内存的最大值相对大很多。联想到JavaScript中的栈内存空间和堆内存空间应该也是一样的，但是JavaScript的执行中间多了个引擎（例如V8）的处理，它会不会还是将栈和堆内存分开分配呢？答案是肯定的。</p>
<ul>
<li><a href="#JavaScript调用栈">JavaScript调用栈</a></li>
<li><a href="#JavaScript栈内存空间大小">JavaScript栈内存空间大小</a></li>
<li><a href="#递归栈溢出的解决方法">递归栈溢出的解决方法</a></li>
</ul>
<h3 id="JavaScript调用栈"><a href="#JavaScript调用栈" class="headerlink" title="JavaScript调用栈"></a>JavaScript调用栈</h3><p>我们所说的JavaScript栈内存，其实就是指它的调用栈，调用栈中保存了函数的调用关系、局部变量和函数参数等信息。关于调用栈大概看一下过程：</p>
<p><img src="/images/callstack.gif" alt=""><br><em>上图用到的工具在<a href="http://latentflip.com/loupe/" target="_blank" rel="external">这里</a></em></p>
<p>上图中，entry开始执行压入栈，执行中调用了fun1再将fun1压入，fun1在log(‘1’)之后又将fun2压入，fun2在log(‘2’)之后没有后续的调用，弹出，fun1没有后续调用也弹出，entry后续有log，压入log(foo)操作执行完弹出，然后entry弹出，最终栈清空，执行完毕。上面只是介绍一个抽象的过程，栈里面只是压入了函数和操作，而严格来说，每一个函数调用是压入了一个栈帧，栈帧里面带有局部变量参数等数据，而局部变量就是计算栈内存空间的关键。</p>
<a class="article-more-a" href="/2018/09/29/2018-08-28-JavaScript栈内存空间/#more">more >></a>
</div>
<div class="article-info article-info-index">
<div class="article-tag tagcloud">
<i class="icon-price-tags icon"></i>
<ul class="article-tag-list">
<li class="article-tag-list-item">
<a href="javascript:void(0)" class="js-tag article-tag-list-link color1">javascript</a>
</li>
</ul>
</div>
<p class="article-more-link">
<a class="article-more-a" href="/2018/09/29/2018-08-28-JavaScript栈内存空间/">展开全文 >></a>
</p>
<div class="clearfix"></div>
</div>
</div>
</article>
<article id="post-2018-08-28-3个月了" class="article article-type-post article-index" itemscope itemprop="blogPost">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2018/08/28/2018-08-28-3个月了/">3个月了</a>
</h1>
<a href="/2018/08/28/2018-08-28-3个月了/" class="archive-article-date">
<time datetime="2018-08-27T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-08-28</time>
</a>
</header>
<div class="article-entry" itemprop="articleBody">
<p>转眼你就3个月了，三四个月前为了你，放弃了更好的选择，现在为了你，得做出其他选择</p>
<p><img src="/images/yuyue.png" style="width:200px;"></p>
</div>
<div class="article-info article-info-index">
<div class="article-tag tagcloud">
<i class="icon-price-tags icon"></i>
<ul class="article-tag-list">
<li class="article-tag-list-item">
<a href="javascript:void(0)" class="js-tag article-tag-list-link color3">生活</a>
</li>
</ul>
</div>
<p class="article-more-link">
<a class="article-more-a" href="/2018/08/28/2018-08-28-3个月了/">展开全文 >></a>
</p>
<div class="clearfix"></div>
</div>
</div>
</article>
<article id="post-2018-01-03-nodejs-划重点" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<h1 itemprop="name">
<a class="article-title" href="/2018/01/03/2018-01-03-nodejs-划重点/">nodejs 从一小段代码划重点</a>
</h1>
<a href="/2018/01/03/2018-01-03-nodejs-划重点/" class="archive-article-date">
<time datetime="2018-01-02T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2018-01-03</time>
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<p>这周给小组内部做了个关于node的小分享，在这里记录下来。因为很多是网上已经有的内容，这篇文章只是把ppt给搬了过来，列出重要的点，具体就不展开了。</p>
<h2 id="一小段启动http服务的代码"><a href="#一小段启动http服务的代码" class="headerlink" title="一小段启动http服务的代码"></a>一小段启动http服务的代码</h2><figure class="highlight"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div></pre></td><td class="code"><pre><div class="line">const http = require(‘http');</div><div class="line"></div><div class="line">const hostname = ‘127.0.0.1';</div><div class="line"></div><div class="line">const port = 1337;</div><div class="line"></div><div class="line">http.createServer((req, res) => {</div><div class="line"></div><div class="line"> res.writeHead(200, { 'Content-Type': 'text/plain' });</div><div class="line"></div><div class="line"> res.end('Hello World\n’);</div><div class="line"></div><div class="line">}).listen(port, hostname, () => {</div><div class="line"> console.log(`Server running at http://${hostname}:${port}/`);</div><div class="line">});</div></pre></td></tr></table></figure>
<h2 id="require-‘http’-是怎么工作的？"><a href="#require-‘http’-是怎么工作的？" class="headerlink" title="require(‘http’)是怎么工作的？"></a>require(‘http’)是怎么工作的？</h2><h3 id="node-js模块分类"><a href="#node-js模块分类" class="headerlink" title="node.js模块分类"></a>node.js模块分类</h3><ul>
<li>builtin module: Node 中以 c++ 形式提供的模块，如 tcp_wrap、contextify 等<br>constants module: Node 中定义常量的模块，用来导出如 signal, openssl 库、 文件访问权限等常量的定义。如文件访问权限中的 O_RDONLY，O_CREAT、 signal 中的 SIGHUP，SIGINT 等</li>
<li>native module: Node 中以 JavaScript 形式提供的模块，如 http,https,fs 等</li>
<li>3rd-party module: 以上模块可以统称 Node 内建模块，除此之外为第三方模 块，典型的如 express 模块。</li>
</ul>
<p>对于 node 自身提供的模块，其实无论是native JS模块还是builtin C++模块，最终都在编译生成可执行文件时，嵌入到了ELF格式的二进制文件node里面。但是原生js模块代码只是保存在node_natives.h中的C++变量不会被编译。程序加载native JS模块会通过<code>node.cc::Binding("natives")</code>拿到模块代码，而加载C++模块则直接用<code>get_builtin_module</code>方法。参考下图：</p>
<p><img src="/images/node-load.png" alt=""></p>
<h3 id="js模块加载"><a href="#js模块加载" class="headerlink" title="js模块加载"></a>js模块加载</h3><ol>
<li>如果模块在缓存中，返回它的 exports 对象。</li>
<li>如果是原生的模块，通过调用 NativeModule.require() 返回结果（process.binding(‘natives’)获取保存在node_natives.h中的原生js模块代码，再通过NativeModule.require进行compile。）。</li>
<li>否则，调用Module创建一个新的模块，并保存到缓存中。</li>
</ol>
<p><code>NativeModule.require</code>重点代码如下：</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div></pre></td><td class="code"><pre><div class="line">NativeModule.require = <span class="function"><span class="keyword">function</span>(<span class="params">id</span>) </span>{</div><div class="line"> <span class="comment">// …</span></div><div class="line"> <span class="keyword">const</span> cached = NativeModule.getCached(id);</div><div class="line"> <span class="keyword">if</span> (cached && (cached.loaded || cached.loading)) {</div><div class="line"> <span class="keyword">return</span> cached.exports;</div><div class="line"> }</div><div class="line"> <span class="comment">// …</span></div><div class="line"> <span class="keyword">const</span> nativeModule = <span class="keyword">new</span> NativeModule(id);</div><div class="line"></div><div class="line"> nativeModule.cache();</div><div class="line"> nativeModule.compile();</div><div class="line"></div><div class="line"> <span class="keyword">return</span> nativeModule.exports;</div><div class="line"> };</div></pre></td></tr></table></figure>
<h3 id="CommonJs几点注意项"><a href="#CommonJs几点注意项" class="headerlink" title="CommonJs几点注意项"></a>CommonJs几点注意项</h3><h4 id="同步加载同步执行"><a href="#同步加载同步执行" class="headerlink" title="同步加载同步执行"></a>同步加载同步执行</h4><p>nodejs中执行到require模块时用fs.readFileSync同步加载文件，加载完同步执行，如果有缓存则直接返回exports。然后继续执行主程序。</p>
<h4 id="模块引用"><a href="#模块引用" class="headerlink" title="模块引用"></a>模块引用</h4><p>假设在模块main中require模块a，main模块拿到a模块的module.exports对象，如果是第一次加载则对象被缓存，下一次require(‘a’)就直接拿这个缓存。 所以如果引入一个模块后改变其中暴露的某个变量，那么在其他引入的地方获取到的变量值也会改变。</p>
<h4 id="循环引用"><a href="#循环引用" class="headerlink" title="循环引用"></a>循环引用</h4><p>缓存机制还解决了循环引用的问题。从源码可以发现模块加载的时候执行的时候会先保存在cache中，所以当a引用b，而b又引用a的情况下，在b执行的时候a已经缓存起来了，所以b只会拿到a的模块缓存（a的exports对象），所以不会出现循环问题。</p>
<h2 id="http是怎么工作的？"><a href="#http是怎么工作的？" class="headerlink" title="http是怎么工作的？"></a>http是怎么工作的？</h2><h3 id="http之事件"><a href="#http之事件" class="headerlink" title="http之事件"></a>http之事件</h3><p>EventEmitter使用观察者模式构建了一个事件处理器。允许我们注册一个或多个函数作为 listeners ，在特定的事件触发时调用。如下图：<br><img src="/images/node-event.png" alt=""></p>
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<article id="post-2017-10-22-nodejs-cluster" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/2017/10/14/2017-10-22-nodejs-cluster/">nodejs cluster模块分析</a>
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<a href="/2017/10/14/2017-10-22-nodejs-cluster/" class="archive-article-date">
<time datetime="2017-10-13T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-10-14</time>
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<p>最近做了点nodejs项目，对nodejs的cluster怎么利用多进程处理请求产生了疑问，于是着手进行了研究，之后发现这其中竟大有文章！一切还是先从遥远的TCP说起吧。。。</p>
<h2 id="TCP与Socket"><a href="#TCP与Socket" class="headerlink" title="TCP与Socket"></a>TCP与Socket</h2><p>说到TCP，相信很多人都相当了解了，大学已经教过，但是又相信有很多人也不是很了解，要不是当时没听，要不也可能是自身的编程能力不足以去实践相关内容，写到这我还特意去翻了一下大学的计算机网络教材，内容是很丰富的，但教人实践的内容还是太少了，里面的内容都把学生当成了有相当的Linux编程能力的人了，所以结果就是大部分只上了一年编程课刚学会几个Hello world程序的大二学生，听了这门课后一脸懵逼，即使记住了也因为没什么实践很快忘了，当年我就是这么懵逼过来的。<br>所以，扯了这些，结果是什么呢，结果就是我们要多动手！而要动手建立一条TCP连接可以用socket来实现，不过这里不是要说socket用法，只是来简单聊一聊他们之间的一点小联系，以便于理解后面的内容。</p>
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<article id="post-linux笔记4" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/2017/06/20/linux笔记4/">小前端的linux私房菜读书笔记（四）——一些常用命令</a>
</h1>
<a href="/2017/06/20/linux笔记4/" class="archive-article-date">
<time datetime="2017-06-19T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-06-20</time>
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<p>这是linux笔记系列文章的最后一篇了。本来还是有一些内容的，但发现平常都很少用到，例如系统工作调度、系统账号管理、系统服务等，所以这些就不做记录了。<br>而shell脚本的内容，也是用到了再去查就行，语法跟其他语言类似，主要还是要掌握常用命令的使用。最后一篇就记录一些常用命令。</p>
<ul>
<li><p>删除文件夹：<code>rm -rf path/to/</code></p>
</li>
<li><p>修改文件【拥有者|用户组|其他用户】权限：</p>
<ul>
<li><code>chmod 764 path/to</code> 表示使path/to目录的所有者：7（111，读写执行权限），组用户：6（110，读写），其他用户：4（100，读）</li>
<li><code>chmod +r</code> 表示增加读权限，+w加写，+x加执行。-r对应减去。可以直接<code>chmod +rwx</code>。对所有用户加读写执行权限：<code>chmod a+rwx path/to/file</code></li>
<li>上面只是指定目录或文件，而子目录没有修改，修改子目录要添加 -R（Recursively，注意大写）参数，表示递归所有子目录。跟<code>rm -rf ./</code>的-r一样作用。</li>
</ul>
</li>
<li><p>查看某个命令的绝对路径：<code>which [命令]</code></p>
</li>
<li><p>建立连接文件：</p>
<ul>
<li>软连接：<code>ln -s path/source path/dist</code>，在当前目录下建立一个链接path/dist，指向path/source。</li>
<li>硬链接：<code>ln path/source path/dist</code></li>
</ul>
</li>
<li><p>筛选grep：grep可以使用正则表达式搜索文本，并且将匹配的行打印出来</p>
</li>
<li><p>管道符：“|”将两个命令分开，前一个的命令输出会成为后面一个命令的输入（标准输入stdin）。常用<code>[命令] | grep</code> 将第一个命令输出的内容通过grep命令过滤某些字符输出。注意有一些命令例如ls命令期待的是命令行参数不是标准输入，所以不能用<code>ls | ls</code>，要用<code>ls | xargs ls</code></p>
</li>
<li><p>xargs，从标准输入重建并执行命令行，标准输入转成命令参数。</p>
</li>
<li><p>流操作</p>
<ul>
<li><code>></code>表示重定向，是将上一个的标准输出定位到另一个标准输出，或者一个文件。</li>
<li><code>>></code>表示追加，是在不改变后面文件内容的前提下，在文件末尾添加前面的输出。</li>
</ul>
</li>
<li><p>查看文件内容</p>
<ul>
<li>tail，输出文件倒数n行的内容。加上<code>-f</code>参数tail命令会持续显示添加到文件中的行（例如写log），直到按下 Ctrl-C 来停止。</li>
<li>cat，输出全部文件内容</li>
</ul>
</li>
</ul>
<ul>
<li><p>ctrl+alt+（f1～f6）：打开tty1～tty6控制台，是控制台界面。而tty7是图形界面，ctrl+alt+f7打开。</p>
</li>
<li><p><code>ps aux</code>可以看到所有运行的程序，配合grep命令进行筛选。</p>
</li>
<li><p>kill命令杀死某个进程。图形界面卡死时，可以打开tty1终端，<code>ps -t -tty7</code>命令查看tty7进程，找到xorg进程到pid号xxx，kill xxx重启图形界面。</p>
</li>
<li><p>文件复制</p>
<ul>
<li>cp，<code>cp path/to/file1 path/to/file2</code>复制到某个文件（覆盖），<code>cp path/to/file path/to/</code>复制到某个目录。如果是拷一个目录，则要加上-r，例如<code>cp -r path/to1 path/to2/</code>。</li>
<li>scp，cp的升级版 ，不同机器间的文件复制，<code>scp user@ip:/hisdir /mydir</code>。</li>
</ul>
</li>
<li><p>显示目录下文件：<code>ls -al</code>，-a表示显示隐藏的，-l表示显示详细资料。</p>
</li>
<li><p>打补丁，patch命令用patch文件给文件打补丁，改变文件的内容。patch文件可用diff命令来取得。</p>
</li>
<li><p>man命令查看命令的说明，例如：<code>man cp</code>，查看cp命令说明。</p>
</li>
<li><p>显示当前路径：pwd</p>
</li>
<li><p>显示文件系统文件占用磁盘空间情况：df</p>
</li>
<li><p><code>netstat -nlp</code> 查看占用端口号的服务(mac的参数有些不一样，无法找到相关程序（-p），得用lsof命令：<code>lsof -nP -iTCP:[端口号]</code></p>
</li>
<li><p>top命令，是Linux下常用的性能分析工具 ，能够实时显示系统中各个进程的资源占用状况（内存和cpu等），类似于Windows的任务管理器。</p>
</li>
</ul>
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<article id="post-linux笔记3" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/2017/06/11/linux笔记3/">小前端的linux私房菜读书笔记（三）——bash的使用</a>
</h1>
<a href="/2017/06/11/linux笔记3/" class="archive-article-date">
<time datetime="2017-06-10T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-06-11</time>
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<p><em>这篇笔记可能稍微琐碎一些，都是一些小的知识点。</em></p>
<p>狭义的shell是命令行方面的软件，包括这里要介绍的bash。广义的shell指能够操作应用程序的接口包括图形界面的软件。<code>bin/bash</code>是Linux默认的shell。</p>
<h3 id="命令行模式"><a href="#命令行模式" class="headerlink" title="命令行模式"></a>命令行模式</h3><p>通常我们称命令行模式为终端界面，linux默认情况下提供六个终端界面(tty1~tty6)来让用户登录，切换方式为：</p>
<ul>
<li>Ctrl+Alt+[F1]~[F6]的组合按钮切换至tty1~tty6终端</li>
<li>Ctrl+Alt+[F7]：切换至图形界面桌面</li>
</ul>
<p>在终端我们就可以输入bash执行命令了，命令运行的顺序基本是这样：</p>
<ol>
<li>以相对或绝对路径执行命令，例如“/bin/ls”或“./ls”</li>
<li>由alias找到该命令来执行</li>
<li>由bash内置的命令来执行</li>
<li>通过$PATH变量的顺序找到第一个命令来执行</li>
</ol>
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<a class="article-title" href="/2017/06/10/linux笔记2/">小前端的linux私房菜读书笔记（二）——Linux常见文件操作与文件系统</a>
</h1>
<a href="/2017/06/10/linux笔记2/" class="archive-article-date">
<time datetime="2017-06-09T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-06-10</time>
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<h3 id="文件操作"><a href="#文件操作" class="headerlink" title="文件操作"></a>文件操作</h3><p>关于文件的操作这里只列出一些基础的命令，不做详细介绍，有需要用到的再去查详细用法即可。</p>
<ul>
<li>文件目录管理命令：<ul>
<li>ls，查看目录下文件，-a查看全部，-l查看完整信息</li>
<li>复制、删除、移动：cp，rm，mv。如果不带任何参数，cp命令默认复制的文件的所有者何权限会被改变，通常复制的目的文件所有者是命令操作者本身。这时候要“cp -a”才可以把文件所有特性复制过来。另外scp命令可以通过ip把文件复制到另外一台机器上。</li>
</ul>
</li>
<li>文件内容查询命令：<ul>
<li>cat（concatenate）：由第一行开始显示文件内容</li>
<li>head：只看头几行</li>
<li>tail：只看结尾几行</li>
<li>more：一页一页显示内容</li>
<li>touch：修改文件时间或者创建新文件</li>
</ul>
</li>
<li>权限与命令间关系：<ul>
<li>让用户进入某目录成为“可工作目录”（例如在目录下使用一些命令），用户至少需要有x权限。</li>
<li>让用户创建一个文件，用户至少需要在文件所在目录具有对目录的w限（x权限更是基本的）</li>
</ul>
</li>
</ul>
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<article id="post-linux笔记1" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/2017/06/04/linux笔记1/">小前端的linux私房菜读书笔记（一）——磁盘分区和文件权限</a>
</h1>
<a href="/2017/06/04/linux笔记1/" class="archive-article-date">
<time datetime="2017-06-03T16:00:00.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-06-04</time>
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<p>虽然之前用过Linux，但在日常使用过程中发现还是有些东西没有了解，所以最近花了些时间看了《鸟哥的linux私房菜》（基础学习篇）一书。作为一个前端一般不需要掌握的太多，在这里把一些我认为比较重要的内容做下笔记。本篇为笔记第一篇，关于磁盘分区和文件权限。</p>
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