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<!DOCTYPE html>
<!-- Techie Tuts website copyright 2020-->
<html lang="en">
<!-- Head module inserted below -->
<head>
<meta charset="utf-8">
<title>Techietuts</title>
<meta name="description" content="">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0">
<!-- Styles -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Montserrat:wght@600&family=Quicksand&display=swap" rel="stylesheet">
<!--
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/firacode/5.2.0/fira_code.css">
<link rel="stylesheet" href="https://unpkg.com/dracula-prism/dist/css/dracula-prism.min.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/prism.min.js"></script>
-->
<link rel="stylesheet" href="/assets/css/fira_code.css">
<link rel="stylesheet" href="/assets/css/dracula_prism.min.css">
<script src="prism.min.js"></script>
<link rel="stylesheet" href="/assets/css/xxxprism.css">
<script src="/assets/css/xxxprism.js"></script>
<link rel="stylesheet" href="/assets/css/code_syntax_highlighter.css">
<link rel="stylesheet" href="/assets/css/style.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<link href="https://cdn.jsdelivr.net/npm/remixicon@2.5.0/fonts/remixicon.css" rel="stylesheet">
<link rel="manifest" href="/assets/img/favicon/site.webmanifest">
<!-- favicon -->
<link rel="icon" type="image/png" sizes="16x16" href="/assets/img/favicon/favicon_techietuts.png">
<!-- Begin Jekyll SEO tag v2.7.1 -->
<meta name="generator" content="Jekyll v4.2.1" />
<meta property="og:title" content="Techietuts" />
<meta property="og:locale" content="en_US" />
<meta name="description" content="Write an awesome description for your new site here. You can edit this line in _config.yml. It will appear in your document head meta (for Google search results) and in your feed.xml site description." />
<meta property="og:description" content="Write an awesome description for your new site here. You can edit this line in _config.yml. It will appear in your document head meta (for Google search results) and in your feed.xml site description." />
<link rel="canonical" href="http://0.0.0.0:4000/404.html" />
<meta property="og:url" content="http://0.0.0.0:4000/404.html" />
<meta property="og:site_name" content="Techietuts" />
<meta name="twitter:card" content="summary" />
<meta property="twitter:title" content="Techietuts" />
<script type="application/ld+json">
{"@type":"WebPage","description":"Write an awesome description for your new site here. You can edit this line in _config.yml. It will appear in your document head meta (for Google search results) and in your feed.xml site description.","headline":"Techietuts","url":"http://0.0.0.0:4000/404.html","@context":"https://schema.org"}</script>
<!-- End Jekyll SEO tag -->
<!-- Google AdSense -->
<!-- <script data-ad-client="ca-pub-6160810274402662" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> -->
<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-6160810274402662" crossorigin="anonymous"></script>
</head>
<style>
.reduce-size{
padding: 30px;
/* background-color: #efefef; */
width: 1080px;
max-width: 100%;
margin: 0 auto;
}
</style>
<body class="animsition">
<!-- Header module inserted below -->
<!-- Mobile Phone Navigation Menu -->
<div class="mobile-nav">
<a href="/" class="top-bar"><img src="/assets/img/logo_02.png" class="logo" style="padding-left: 0;"></a>
<div id="myLinks">
<div class="mob-dropdown">
<!-- <button class="mob-dropbtn"><i class="fa fa-code"> </i>programming</button> -->
<button class="mob-dropbtn"><i class="fa fa-code"> </i>Programming Languages</button>
<div class="mob-dropdown-content">
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Ruby</button>
<div class="mob-sub-dropdown-content">
<a href="/category/programming/ruby/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/programming/ruby/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/programming/ruby/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/programming/ruby/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>JavaScript</button>
<div class="mob-sub-dropdown-content">
<a href="/category/programming/javascript/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/programming/javascript/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/programming/javascript/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/programming/javascript/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>HTML</button>
<div class="mob-sub-dropdown-content">
<a href="/category/programming/html/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/programming/html/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/programming/html/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/programming/html/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>CSS</button>
<div class="mob-sub-dropdown-content">
<a href="/category/programming/css/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/programming/css/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/programming/css/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/programming/css/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Python</button>
<div class="mob-sub-dropdown-content">
<a href="/category/programming/python/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/programming/python/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/programming/python/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/programming/python/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
</div>
</div>
<div class="mob-dropdown">
<!-- <button class="mob-dropbtn"><i class="fa fa-code"> </i>frameworks</button> -->
<button class="mob-dropbtn"><i class="fa fa-crop"> </i>Frameworks</button>
<div class="mob-dropdown-content">
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Ruby-on-Rails</button>
<div class="mob-sub-dropdown-content">
<a href="/category/frameworks/ruby-on-rails/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/frameworks/ruby-on-rails/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/frameworks/ruby-on-rails/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/frameworks/ruby-on-rails/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Jekyll</button>
<div class="mob-sub-dropdown-content">
<a href="/category/frameworks/jekyll/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/frameworks/jekyll/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/frameworks/jekyll/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/frameworks/jekyll/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>React</button>
<div class="mob-sub-dropdown-content">
<a href="/category/frameworks/react/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/frameworks/react/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/frameworks/react/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/frameworks/react/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Django</button>
<div class="mob-sub-dropdown-content">
<a href="/category/frameworks/django/installation-&-setup"><i class="fa fa-ellipsis-v"> </i>Installation-&-Setup</a>
<a href="/category/frameworks/django/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/frameworks/django/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/frameworks/django/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
</div>
</div>
<div class="mob-dropdown">
<!-- <button class="mob-dropbtn"><i class="fa fa-code"> </i>databases</button> -->
<button class="mob-dropbtn"><i class="fa fa-database"> </i>Databases</button>
<div class="mob-dropdown-content">
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>MySql</button>
<div class="mob-sub-dropdown-content">
<a href="/category/databases/mysql/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/databases/mysql/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/databases/mysql/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/databases/mysql/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Postgres</button>
<div class="mob-sub-dropdown-content">
<a href="/category/databases/postgres/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/databases/postgres/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/databases/postgres/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/databases/postgres/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Redis</button>
<div class="mob-sub-dropdown-content">
<a href="/category/databases/redis/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/databases/redis/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/databases/redis/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/databases/redis/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
</div>
</div>
<div class="mob-dropdown">
<!-- <button class="mob-dropbtn"><i class="fa fa-code"> </i>vcs</button> -->
<button class="mob-dropbtn"><i class="fa fa-github"> </i>Vcs</button>
<div class="mob-dropdown-content">
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Github</button>
<div class="mob-sub-dropdown-content">
<a href="/category/vcs/github/concepts"><i class="fa fa-ellipsis-v"> </i>Concepts</a>
<a href="/category/vcs/github/tutorials"><i class="fa fa-ellipsis-v"> </i>Tutorials</a>
<a href="/category/vcs/github/cheat-sheets"><i class="fa fa-ellipsis-v"> </i>Cheat Sheets</a>
<a href="/category/vcs/github/projects"><i class="fa fa-ellipsis-v"> </i>Projects</a>
</div>
</div>
</div>
</div>
<div class="mob-dropdown">
<!-- <button class="mob-dropbtn"><i class="fa fa-code"> </i>more-topics</button> -->
<button class="mob-dropbtn"><i class="fa fa-connectdevelop"> </i>More-topics</button>
<div class="mob-dropdown-content">
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Software Engineering</button>
<div class="mob-sub-dropdown-content">
<a href="/category/more-topics/software-engineering/object-oriented-programming/"><i class="fa fa-ellipsis-v"> </i>Object Oriented Programming</a>
<a href="/category/more-topics/software-engineering/data-structures/"><i class="fa fa-ellipsis-v"> </i>Data Structures</a>
<a href="/category/more-topics/software-engineering/algorithms/"><i class="fa fa-ellipsis-v"> </i>Algorithms</a>
<a href="/category/more-topics/software-engineering/design-patterns/"><i class="fa fa-ellipsis-v"> </i>Design Patterns</a>
</div>
</div>
<div class="mob-sub-dropdown">
<button class="mob-sub-dropbtn"><i class="fa fa-angle-right"> </i>Operating Systems</button>
<div class="mob-sub-dropdown-content">
<a href="/category/more-topics/operating-systems/ubuntu"><i class="fa fa-ellipsis-v"> </i>Ubuntu</a>
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