<!DOCTYPE html>
<html>

<head>
  <title></title>
  <link rel="stylesheet" type="text/css" href="/styles/main.css" />
  <%include ../../partials/head%>
  <style media="screen">
    .Terminal::after{
      content: "-|+|x";
      color: white;
      position: relative;
      left: calc(100% - 60px);
      font-size: 1.5em;
      font-weight: bolder;
      background-color: grey;
    }
    .Terminal{
      background-color: black;
      color: white;
    }
  </style>
</head>

<body>
  <header>
    <%include ../../partials/header%>
  </header>


<div class="">
  <head>
  <meta charset='UTF-8'><meta name='viewport' content='width=device-width initial-scale=1'>
  <title>howto</title><link href='file://night/mermaid.dark.css' rel='stylesheet' type='text/css' /><link href='file://night/codeblock.dark.css' rel='stylesheet' type='text/css' /><link href='file://night/sourcemode.dark.css' rel='stylesheet' type='text/css' /><style type='text/css'>html {overflow-x: initial !important;}:root { --bg-color:#ffffff; --text-color:#333333; --select-text-bg-color:#B5D6FC; --select-text-font-color:auto; --monospace:"Lucida Console",Consolas,"Courier",monospace; }
  html { font-size: 14px; background-color: var(--bg-color); color: var(--text-color); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased; }
  body { margin: 0px; padding: 0px; height: auto; bottom: 0px; top: 0px; left: 0px; right: 0px; font-size: 1rem; line-height: 1.42857; overflow-x: hidden; background: inherit; tab-size: 4; }
  iframe { margin: auto; }
  a.url { word-break: break-all; }
  a:active, a:hover { outline: 0px; }
  .in-text-selection, ::selection { text-shadow: none; background: var(--select-text-bg-color); color: var(--select-text-font-color); }
  #write { margin: 0px auto; height: auto; width: inherit; word-break: normal; overflow-wrap: break-word; position: relative; white-space: normal; overflow-x: visible; padding-top: 40px; }
  #write.first-line-indent p { text-indent: 2em; }
  #write.first-line-indent li p, #write.first-line-indent p * { text-indent: 0px; }
  #write.first-line-indent li { margin-left: 2em; }
  .for-image #write { padding-left: 8px; padding-right: 8px; }
  body.typora-export { padding-left: 30px; padding-right: 30px; }
  .typora-export .footnote-line, .typora-export li, .typora-export p { white-space: pre-wrap; }
  @media screen and (max-width: 500px) {
    body.typora-export { padding-left: 0px; padding-right: 0px; }
    #write { padding-left: 20px; padding-right: 20px; }
    .CodeMirror-sizer { margin-left: 0px !important; }
    .CodeMirror-gutters { display: none !important; }
  }
  #write li > figure:last-child { margin-bottom: 0.5rem; }
  #write ol, #write ul { position: relative; }
  img { max-width: 100%; vertical-align: middle; }
  button, input, select, textarea { color: inherit; font: inherit; }
  input[type="checkbox"], input[type="radio"] { line-height: normal; padding: 0px; }
  *, ::after, ::before { box-sizing: border-box; }
  #write h1, #write h2, #write h3, #write h4, #write h5, #write h6, #write p, #write pre { width: inherit; }
  #write h1, #write h2, #write h3, #write h4, #write h5, #write h6, #write p { position: relative; }
  p { line-height: inherit; }
  h1, h2, h3, h4, h5, h6 { break-after: avoid-page; break-inside: avoid; orphans: 2; }
  p { orphans: 4; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.6rem; }
  h4 { font-size: 1.4rem; }
  h5 { font-size: 1.2rem; }
  h6 { font-size: 1rem; }
  .md-math-block, .md-rawblock, h1, h2, h3, h4, h5, h6, p { margin-top: 1rem; margin-bottom: 1rem; }
  .hidden { display: none; }
  .md-blockmeta { color: rgb(204, 204, 204); font-weight: 700; font-style: italic; }
  a { cursor: pointer; }
  sup.md-footnote { padding: 2px 4px; background-color: rgba(238, 238, 238, 0.7); color: rgb(85, 85, 85); border-radius: 4px; cursor: pointer; }
  sup.md-footnote a, sup.md-footnote a:hover { color: inherit; text-transform: inherit; text-decoration: inherit; }
  #write input[type="checkbox"] { cursor: pointer; width: inherit; height: inherit; }
  figure { overflow-x: auto; margin: 1.2em 0px; max-width: calc(100% + 16px); padding: 0px; }
  figure > table { margin: 0px !important; }
  tr { break-inside: avoid; break-after: auto; }
  thead { display: table-header-group; }
  table { border-collapse: collapse; border-spacing: 0px; width: 100%; overflow: auto; break-inside: auto; text-align: left; }
  table.md-table td { min-width: 32px; }
  .CodeMirror-gutters { border-right: 0px; background-color: inherit; }
  .CodeMirror-linenumber { user-select: none; }
  .CodeMirror { text-align: left; }
  .CodeMirror-placeholder { opacity: 0.3; }
  .CodeMirror pre { padding: 0px 4px; }
  .CodeMirror-lines { padding: 0px; }
  div.hr:focus { cursor: none; }
  #write pre { white-space: pre-wrap; }
  #write.fences-no-line-wrapping pre { white-space: pre; }
  #write pre.ty-contain-cm { white-space: normal; }
  .CodeMirror-gutters { margin-right: 4px; }
  .md-fences { font-size: 0.9rem; display: block; break-inside: avoid; text-align: left; overflow: visible; white-space: pre; background: inherit; position: relative !important; }
  .md-diagram-panel { width: 100%; margin-top: 10px; text-align: center; padding-top: 0px; padding-bottom: 8px; overflow-x: auto; }
  #write .md-fences.mock-cm { white-space: pre-wrap; }
  .md-fences.md-fences-with-lineno { padding-left: 0px; }
  #write.fences-no-line-wrapping .md-fences.mock-cm { white-space: pre; overflow-x: auto; }
  .md-fences.mock-cm.md-fences-with-lineno { padding-left: 8px; }
  .CodeMirror-line, twitterwidget { break-inside: avoid; }
  .footnotes { opacity: 0.8; font-size: 0.9rem; margin-top: 1em; margin-bottom: 1em; }
  .footnotes + .footnotes { margin-top: 0px; }
  .md-reset { margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: top; background: 0px 0px; text-decoration: none; text-shadow: none; float: none; position: static; width: auto; height: auto; white-space: nowrap; cursor: inherit; -webkit-tap-highlight-color: transparent; line-height: normal; font-weight: 400; text-align: left; box-sizing: content-box; direction: ltr; }
  li div { padding-top: 0px; }
  blockquote { margin: 1rem 0px; }
  li .mathjax-block, li p { margin: 0.5rem 0px; }
  li { margin: 0px; position: relative; }
  blockquote > :last-child { margin-bottom: 0px; }
  blockquote > :first-child, li > :first-child { margin-top: 0px; }
  .footnotes-area { color: rgb(136, 136, 136); margin-top: 0.714rem; padding-bottom: 0.143rem; white-space: normal; }
  #write .footnote-line { white-space: pre-wrap; }
  @media print {
    body, html { border: 1px solid transparent; height: 99%; break-after: avoid; break-before: avoid; }
    #write { margin-top: 0px; padding-top: 0px; border-color: transparent !important; }
    .typora-export * { -webkit-print-color-adjust: exact; }
    html.blink-to-pdf { font-size: 13px; }
    .typora-export #write { padding-left: 32px; padding-right: 32px; padding-bottom: 0px; break-after: avoid; }
    .typora-export #write::after { height: 0px; }
  }
  .footnote-line { margin-top: 0.714em; font-size: 0.7em; }
  a img, img a { cursor: pointer; }
  pre.md-meta-block { font-size: 0.8rem; min-height: 0.8rem; white-space: pre-wrap; background: rgb(204, 204, 204); display: block; overflow-x: hidden; }
  p > .md-image:only-child:not(.md-img-error) img, p > img:only-child { display: block; margin: auto; }
  p > .md-image:only-child { display: inline-block; width: 100%; }
  #write .MathJax_Display { margin: 0.8em 0px 0px; }
  .md-math-block { width: 100%; }
  .md-math-block:not(:empty)::after { display: none; }
  [contenteditable="true"]:active, [contenteditable="true"]:focus { outline: 0px; box-shadow: none; }
  .md-task-list-item { position: relative; list-style-type: none; }
  .task-list-item.md-task-list-item { padding-left: 0px; }
  .md-task-list-item > input { position: absolute; top: 0px; left: 0px; margin-left: -1.2em; margin-top: calc(1em - 10px); border: none; }
  .math { font-size: 1rem; }
  .md-toc { min-height: 3.58rem; position: relative; font-size: 0.9rem; border-radius: 10px; }
  .md-toc-content { position: relative; margin-left: 0px; }
  .md-toc-content::after, .md-toc::after { display: none; }
  .md-toc-item { display: block; color: rgb(65, 131, 196); }
  .md-toc-item a { text-decoration: none; }
  .md-toc-inner:hover { text-decoration: underline; }
  .md-toc-inner { display: inline-block; cursor: pointer; }
  .md-toc-h1 .md-toc-inner { margin-left: 0px; font-weight: 700; }
  .md-toc-h2 .md-toc-inner { margin-left: 2em; }
  .md-toc-h3 .md-toc-inner { margin-left: 4em; }
  .md-toc-h4 .md-toc-inner { margin-left: 6em; }
  .md-toc-h5 .md-toc-inner { margin-left: 8em; }
  .md-toc-h6 .md-toc-inner { margin-left: 10em; }
  @media screen and (max-width: 48em) {
    .md-toc-h3 .md-toc-inner { margin-left: 3.5em; }
    .md-toc-h4 .md-toc-inner { margin-left: 5em; }
    .md-toc-h5 .md-toc-inner { margin-left: 6.5em; }
    .md-toc-h6 .md-toc-inner { margin-left: 8em; }
  }
  a.md-toc-inner { font-size: inherit; font-style: inherit; font-weight: inherit; line-height: inherit; }
  .footnote-line a:not(.reversefootnote) { color: inherit; }
  .md-attr { display: none; }
  .md-fn-count::after { content: "."; }
  code, pre, samp, tt { font-family: var(--monospace); }
  kbd { margin: 0px 0.1em; padding: 0.1em 0.6em; font-size: 0.8em; color: rgb(36, 39, 41); background: rgb(255, 255, 255); border: 1px solid rgb(173, 179, 185); border-radius: 3px; box-shadow: rgba(12, 13, 14, 0.2) 0px 1px 0px, rgb(255, 255, 255) 0px 0px 0px 2px inset; white-space: nowrap; vertical-align: middle; }
  .md-comment { color: rgb(162, 127, 3); opacity: 0.8; font-family: var(--monospace); }
  code { text-align: left; vertical-align: initial; }
  a.md-print-anchor { white-space: pre !important; border-width: initial !important; border-style: none !important; border-color: initial !important; display: inline-block !important; position: absolute !important; width: 1px !important; right: 0px !important; outline: 0px !important; background: 0px 0px !important; text-decoration: initial !important; text-shadow: initial !important; }
  .md-inline-math .MathJax_SVG .noError { display: none !important; }
  .html-for-mac .inline-math-svg .MathJax_SVG { vertical-align: 0.2px; }
  .md-math-block .MathJax_SVG_Display { text-align: center; margin: 0px; position: relative; text-indent: 0px; max-width: none; max-height: none; min-height: 0px; min-width: 100%; width: auto; overflow-y: hidden; display: block !important; }
  .MathJax_SVG_Display, .md-inline-math .MathJax_SVG_Display { width: auto; margin: inherit; display: inline-block !important; }
  .MathJax_SVG .MJX-monospace { font-family: var(--monospace); }
  .MathJax_SVG .MJX-sans-serif { font-family: sans-serif; }
  .MathJax_SVG { display: inline; font-style: normal; font-weight: 400; line-height: normal; zoom: 90%; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; }
  .MathJax_SVG * { transition: none 0s ease 0s; }
  .MathJax_SVG_Display svg { vertical-align: middle !important; margin-bottom: 0px !important; margin-top: 0px !important; }
  .os-windows.monocolor-emoji .md-emoji { font-family: "Segoe UI Symbol", sans-serif; }
  .md-diagram-panel > svg { max-width: 100%; }
  [lang="mermaid"] svg, [lang="flow"] svg { max-width: 100%; height: auto; }
  [lang="mermaid"] .node text { font-size: 1rem; }
  table tr th { border-bottom: 0px; }
  video { max-width: 100%; display: block; margin: 0px auto; }
  iframe { max-width: 100%; width: 100%; border: none; }
  .highlight td, .highlight tr { border: 0px; }
  svg[id^="mermaidChart"] { line-height: 1em; }
  mark { background: rgb(255, 255, 0); color: rgb(0, 0, 0); }
  .md-html-inline .md-plain, .md-html-inline strong, mark .md-inline-math, mark strong { color: inherit; }
  mark .md-meta { color: rgb(0, 0, 0); opacity: 0.3 !important; }


  .CodeMirror { height: auto; }
  .CodeMirror.cm-s-inner { background: inherit; }
  .CodeMirror-scroll { overflow: auto hidden; z-index: 3; }
  .CodeMirror-gutter-filler, .CodeMirror-scrollbar-filler { background-color: rgb(255, 255, 255); }
  .CodeMirror-gutters { border-right: 1px solid rgb(221, 221, 221); background: inherit; white-space: nowrap; }
  .CodeMirror-linenumber { padding: 0px 3px 0px 5px; text-align: right; color: rgb(153, 153, 153); }
  .cm-s-inner .cm-keyword { color: rgb(119, 0, 136); }
  .cm-s-inner .cm-atom, .cm-s-inner.cm-atom { color: rgb(34, 17, 153); }
  .cm-s-inner .cm-number { color: rgb(17, 102, 68); }
  .cm-s-inner .cm-def { color: rgb(0, 0, 255); }
  .cm-s-inner .cm-variable { color: rgb(0, 0, 0); }
  .cm-s-inner .cm-variable-2 { color: rgb(0, 85, 170); }
  .cm-s-inner .cm-variable-3 { color: rgb(0, 136, 85); }
  .cm-s-inner .cm-string { color: rgb(170, 17, 17); }
  .cm-s-inner .cm-property { color: rgb(0, 0, 0); }
  .cm-s-inner .cm-operator { color: rgb(152, 26, 26); }
  .cm-s-inner .cm-comment, .cm-s-inner.cm-comment { color: rgb(170, 85, 0); }
  .cm-s-inner .cm-string-2 { color: rgb(255, 85, 0); }
  .cm-s-inner .cm-meta { color: rgb(85, 85, 85); }
  .cm-s-inner .cm-qualifier { color: rgb(85, 85, 85); }
  .cm-s-inner .cm-builtin { color: rgb(51, 0, 170); }
  .cm-s-inner .cm-bracket { color: rgb(153, 153, 119); }
  .cm-s-inner .cm-tag { color: rgb(17, 119, 0); }
  .cm-s-inner .cm-attribute { color: rgb(0, 0, 204); }
  .cm-s-inner .cm-header, .cm-s-inner.cm-header { color: rgb(0, 0, 255); }
  .cm-s-inner .cm-quote, .cm-s-inner.cm-quote { color: rgb(0, 153, 0); }
  .cm-s-inner .cm-hr, .cm-s-inner.cm-hr { color: rgb(153, 153, 153); }
  .cm-s-inner .cm-link, .cm-s-inner.cm-link { color: rgb(0, 0, 204); }
  .cm-negative { color: rgb(221, 68, 68); }
  .cm-positive { color: rgb(34, 153, 34); }
  .cm-header, .cm-strong { font-weight: 700; }
  .cm-del { text-decoration: line-through; }
  .cm-em { font-style: italic; }
  .cm-link { text-decoration: underline; }
  .cm-error { color: red; }
  .cm-invalidchar { color: red; }
  .cm-constant { color: rgb(38, 139, 210); }
  .cm-defined { color: rgb(181, 137, 0); }
  div.CodeMirror span.CodeMirror-matchingbracket { color: rgb(0, 255, 0); }
  div.CodeMirror span.CodeMirror-nonmatchingbracket { color: rgb(255, 34, 34); }
  .cm-s-inner .CodeMirror-activeline-background { background: inherit; }
  .CodeMirror { position: relative; overflow: hidden; }
  .CodeMirror-scroll { height: 100%; outline: 0px; position: relative; box-sizing: content-box; background: inherit; }
  .CodeMirror-sizer { position: relative; }
  .CodeMirror-gutter-filler, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-vscrollbar { position: absolute; z-index: 6; display: none; }
  .CodeMirror-vscrollbar { right: 0px; top: 0px; overflow: hidden; }
  .CodeMirror-hscrollbar { bottom: 0px; left: 0px; overflow: hidden; }
  .CodeMirror-scrollbar-filler { right: 0px; bottom: 0px; }
  .CodeMirror-gutter-filler { left: 0px; bottom: 0px; }
  .CodeMirror-gutters { position: absolute; left: 0px; top: 0px; padding-bottom: 30px; z-index: 3; }
  .CodeMirror-gutter { white-space: normal; height: 100%; box-sizing: content-box; padding-bottom: 30px; margin-bottom: -32px; display: inline-block; }
  .CodeMirror-gutter-wrapper { position: absolute; z-index: 4; background: 0px 0px !important; border: none !important; }
  .CodeMirror-gutter-background { position: absolute; top: 0px; bottom: 0px; z-index: 4; }
  .CodeMirror-gutter-elt { position: absolute; cursor: default; z-index: 4; }
  .CodeMirror-lines { cursor: text; }
  .CodeMirror pre { border-radius: 0px; border-width: 0px; background: 0px 0px; font-family: inherit; font-size: inherit; margin: 0px; white-space: pre; overflow-wrap: normal; color: inherit; z-index: 2; position: relative; overflow: visible; }
  .CodeMirror-wrap pre { overflow-wrap: break-word; white-space: pre-wrap; word-break: normal; }
  .CodeMirror-code pre { border-right: 30px solid transparent; width: fit-content; }
  .CodeMirror-wrap .CodeMirror-code pre { border-right: none; width: auto; }
  .CodeMirror-linebackground { position: absolute; left: 0px; right: 0px; top: 0px; bottom: 0px; z-index: 0; }
  .CodeMirror-linewidget { position: relative; z-index: 2; overflow: auto; }
  .CodeMirror-wrap .CodeMirror-scroll { overflow-x: hidden; }
  .CodeMirror-measure { position: absolute; width: 100%; height: 0px; overflow: hidden; visibility: hidden; }
  .CodeMirror-measure pre { position: static; }
  .CodeMirror div.CodeMirror-cursor { position: absolute; visibility: hidden; border-right: none; width: 0px; }
  .CodeMirror div.CodeMirror-cursor { visibility: hidden; }
  .CodeMirror-focused div.CodeMirror-cursor { visibility: inherit; }
  .cm-searching { background: rgba(255, 255, 0, 0.4); }
  @media print {
    .CodeMirror div.CodeMirror-cursor { visibility: hidden; }
  }


  /* Flowchart variables */
  /* Sequence Diagram variables */
  /* Gantt chart variables */
  /* state colors */
  .label {

    color: #333; }

  .label text {
    fill: #333; }

  .node rect,
  .node circle,
  .node ellipse,
  .node polygon {
    fill: #BDD5EA;
    stroke: #9370DB;
    stroke-width: 1px; }

  .node .label {
    text-align: center; }

  .node.clickable {
    cursor: pointer; }

  .arrowheadPath {
    fill: lightgrey; }

  .edgePath .path {
    stroke: lightgrey;
    stroke-width: 1.5px; }

  .edgeLabel {
    background-color: #e8e8e8;
    text-align: center; }

  .cluster rect {
    fill: #6D6D65;
    stroke: rgba(255, 255, 255, 0.25);
    stroke-width: 1px; }

  .cluster text {
    fill: #F9FFFE; }

  div.mermaidTooltip {
    position: absolute;
    text-align: center;
    max-width: 200px;
    padding: 2px;

    font-size: 12px;
    background: #6D6D65;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 2px;
    pointer-events: none;
    z-index: 100; }

  .actor {
    stroke: #81B1DB;
    fill: #BDD5EA; }

  text.actor {
    fill: black;
    stroke: none; }

  .actor-line {
    stroke: lightgrey; }

  .messageLine0 {
    stroke-width: 1.5;
    stroke-dasharray: '2 2';
    stroke: lightgrey; }

  .messageLine1 {
    stroke-width: 1.5;
    stroke-dasharray: '2 2';
    stroke: lightgrey; }

  #arrowhead {
    fill: lightgrey; }

  .sequenceNumber {
    fill: white; }

  #sequencenumber {
    fill: lightgrey; }

  #crosshead path {
    fill: lightgrey !important;
    stroke: lightgrey !important; }

  .messageText {
    fill: lightgrey;
    stroke: none; }

  .labelBox {
    stroke: #81B1DB;
    fill: #BDD5EA; }

  .labelText {
    fill: #323D47;
    stroke: none; }

  .loopText {
    fill: lightgrey;
    stroke: none; }

  .loopLine {
    stroke-width: 2;
    stroke-dasharray: '2 2';
    stroke: #81B1DB; }

  .note {
    stroke: rgba(255, 255, 255, 0.25);
    fill: #fff5ad; }

  .noteText {
    fill: black;
    stroke: none;

    font-size: 14px; }

  .activation0 {
    fill: #f4f4f4;
    stroke: #666; }

  .activation1 {
    fill: #f4f4f4;
    stroke: #666; }

  .activation2 {
    fill: #f4f4f4;
    stroke: #666; }

  /** Section styling */
  .section {
    stroke: none;
    opacity: 0.2; }

  .section0 {
    fill: rgba(255, 255, 255, 0.3); }

  .section2 {
    fill: #EAE8B9; }

  .section1,
  .section3 {
    fill: white;
    opacity: 0.2; }

  .sectionTitle0 {
    fill: #F9FFFE; }

  .sectionTitle1 {
    fill: #F9FFFE; }

  .sectionTitle2 {
    fill: #F9FFFE; }

  .sectionTitle3 {
    fill: #F9FFFE; }

  .sectionTitle {
    text-anchor: start;
    font-size: 11px;
    text-height: 14px;
     }

  /* Grid and axis */
  .grid .tick {
    stroke: lightgrey;
    opacity: 0.3;
    shape-rendering: crispEdges; }

  .grid path {
    stroke-width: 0; }

  /* Today line */
  .today {
    fill: none;
    stroke: #DB5757;
    stroke-width: 2px; }

  /* Task styling */
  /* Default task */
  .task {
    stroke-width: 2; }

  .taskText {
    text-anchor: middle;
     }

  .taskText:not([font-size]) {
    font-size: 11px; }

  .taskTextOutsideRight {
    fill: #323D47;
    text-anchor: start;
    font-size: 11px;
     }

  .taskTextOutsideLeft {
    fill: #323D47;
    text-anchor: end;
    font-size: 11px; }

  /* Special case clickable */
  .task.clickable {
    cursor: pointer; }

  .taskText.clickable {
    cursor: pointer;
    fill: #003163 !important;
    font-weight: bold; }

  .taskTextOutsideLeft.clickable {
    cursor: pointer;
    fill: #003163 !important;
    font-weight: bold; }

  .taskTextOutsideRight.clickable {
    cursor: pointer;
    fill: #003163 !important;
    font-weight: bold; }

  /* Specific task settings for the sections*/
  .taskText0,
  .taskText1,
  .taskText2,
  .taskText3 {
    fill: #323D47; }

  .task0,
  .task1,
  .task2,
  .task3 {
    fill: #BDD5EA;
    stroke: rgba(255, 255, 255, 0.5); }

  .taskTextOutside0,
  .taskTextOutside2 {
    fill: lightgrey; }

  .taskTextOutside1,
  .taskTextOutside3 {
    fill: lightgrey; }

  /* Active task */
  .active0,
  .active1,
  .active2,
  .active3 {
    fill: #81B1DB;
    stroke: rgba(255, 255, 255, 0.5); }

  .activeText0,
  .activeText1,
  .activeText2,
  .activeText3 {
    fill: #323D47 !important; }

  /* Completed task */
  .done0,
  .done1,
  .done2,
  .done3 {
    stroke: grey;
    fill: lightgrey;
    stroke-width: 2; }

  .doneText0,
  .doneText1,
  .doneText2,
  .doneText3 {
    fill: #323D47 !important; }

  /* Tasks on the critical line */
  .crit0,
  .crit1,
  .crit2,
  .crit3 {
    stroke: #E83737;
    fill: #E83737;
    stroke-width: 2; }

  .activeCrit0,
  .activeCrit1,
  .activeCrit2,
  .activeCrit3 {
    stroke: #E83737;
    fill: #81B1DB;
    stroke-width: 2; }

  .doneCrit0,
  .doneCrit1,
  .doneCrit2,
  .doneCrit3 {
    stroke: #E83737;
    fill: lightgrey;
    stroke-width: 2;
    cursor: pointer;
    shape-rendering: crispEdges; }

  .milestone {
    transform: rotate(45deg) scale(0.8, 0.8); }

  .milestoneText {
    font-style: italic; }

  .doneCritText0,
  .doneCritText1,
  .doneCritText2,
  .doneCritText3 {
    fill: #323D47 !important; }

  .activeCritText0,
  .activeCritText1,
  .activeCritText2,
  .activeCritText3 {
    fill: #323D47 !important; }

  .titleText {
    text-anchor: middle;
    font-size: 18px;
    fill: #323D47;
     }

  g.classGroup text {
    fill: #9370DB;
    stroke: none;

    font-size: 10px; }
    g.classGroup text .title {
      font-weight: bolder; }

  g.classGroup rect {
    fill: #BDD5EA;
    stroke: #9370DB; }

  g.classGroup line {
    stroke: #9370DB;
    stroke-width: 1; }

  .classLabel .box {
    stroke: none;
    stroke-width: 0;
    fill: #BDD5EA;
    opacity: 0.5; }

  .classLabel .label {
    fill: #9370DB;
    font-size: 10px; }

  .relation {
    stroke: #9370DB;
    stroke-width: 1;
    fill: none; }

  #compositionStart {
    fill: #9370DB;
    stroke: #9370DB;
    stroke-width: 1; }

  #compositionEnd {
    fill: #9370DB;
    stroke: #9370DB;
    stroke-width: 1; }

  #aggregationStart {
    fill: #BDD5EA;
    stroke: #9370DB;
    stroke-width: 1; }

  #aggregationEnd {
    fill: #BDD5EA;
    stroke: #9370DB;
    stroke-width: 1; }

  #dependencyStart {
    fill: #9370DB;
    stroke: #9370DB;
    stroke-width: 1; }

  #dependencyEnd {
    fill: #9370DB;
    stroke: #9370DB;
    stroke-width: 1; }

  #extensionStart {
    fill: #9370DB;
    stroke: #9370DB;
    stroke-width: 1; }

  #extensionEnd {
    fill: #9370DB;
    stroke: #9370DB;
    stroke-width: 1; }

  .commit-id,
  .commit-msg,
  .branch-label {
    fill: lightgrey;
    color: lightgrey;
     }

  .pieTitleText {
    text-anchor: middle;
    font-size: 25px;
    fill: #323D47;
     }

  .slice {
     }

  g.stateGroup text {
    fill: #eee;
    stroke: none;
    font-size: 10px;
     }

  g.stateGroup circle {
    fill: white !important;
    stroke: white !important;
  }

  g.stateGroup .state-title {
    font-weight: bolder;
    fill: black; }

  g.stateGroup rect {
    fill: #ececff;
    stroke: #9370DB; }

  g.stateGroup line {
    stroke: #9370DB;
    stroke-width: 1; }

  .transition {
    stroke: #9370DB;
    stroke-width: 1;
    fill: none; }

  .stateGroup .composit {
    fill: #555;
    border-bottom: 1px; }

  .state-note {
    stroke: rgba(255, 255, 255, 0.25);
    fill: #fff5ad; }
    .state-note text {
      fill: black;
      stroke: none;
      font-size: 10px; }

  .stateLabel .box {
    stroke: none;
    stroke-width: 0;
    fill: #BDD5EA;
    opacity: 0.5; }

  .stateLabel text {
    fill: black;
    font-size: 10px;
    font-weight: bold;
     }

  ;
  /* CSS Document */

  /** code highlight */

  .cm-s-inner .cm-variable,
  .cm-s-inner .cm-operator,
  .cm-s-inner .cm-property {
      color: #b8bfc6;
  }

  .cm-s-inner .cm-keyword {
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  .cm-s-inner .cm-tag {
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  }

  .CodeMirror div.CodeMirror-cursor {
      border-left: 1px solid #b8bfc6;
      z-index: 3;
  }

  .cm-s-inner .cm-string {
      color: #D26B6B;
  }

  .cm-s-inner .cm-comment,
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      color: #DA924A;
  }

  .cm-s-inner .cm-header,
  .cm-s-inner .cm-def,
  .cm-s-inner.cm-header,
  .cm-s-inner.cm-def {
      color: #8d8df0;
  }

  .cm-s-inner .cm-quote,
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      color: #57ac57;
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  .cm-s-inner .cm-hr {
      color: #d8d5d5;
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  .cm-s-inner .cm-link {
      color: #d3d3ef;
  }

  .cm-s-inner .cm-negative {
      color: #d95050;
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  .cm-s-inner .cm-positive {
      color: #50e650;
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  .cm-s-inner .cm-string-2 {
      color: #f50;
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  .cm-s-inner .cm-meta,
  .cm-s-inner .cm-qualifier {
      color: #b7b3b3;
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  .cm-s-inner .cm-builtin {
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  .cm-s-inner .cm-bracket {
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  .cm-s-inner .cm-atom,
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      color: #84B6CB;
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  .cm-s-inner .cm-number {
      color: #64AB8F;
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  .cm-s-inner .cm-variable {
      color: #b8bfc6;
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  .cm-s-inner .cm-variable-2 {
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  .cm-s-inner .cm-variable-3 {
      color: #1cc685;
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  .CodeMirror-selectedtext,
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      background: #4a89dc;
      color: #fff !important;
      text-shadow: none;
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  .CodeMirror-gutters {
      border-right: none;
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  /* CSS Document */

  /** markdown source **/
  .cm-s-typora-default .cm-header,
  .cm-s-typora-default .cm-property
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      color: #cebcca;
  }

  .CodeMirror.cm-s-typora-default div.CodeMirror-cursor{
      border-left: 3px solid #b8bfc6;
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  .cm-s-typora-default .cm-comment {
      color: #9FB1FF;
  }

  .cm-s-typora-default .cm-string {
      color: #A7A7D9
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      color: #848695;
      font-style: italic;
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  .cm-s-typora-default .cm-link {
      color: #95B94B;
  }

  .cm-s-typora-default .CodeMirror-activeline-background {
      background: rgba(51, 51, 51, 0.72);
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  .cm-s-typora-default .cm-comment, .cm-s-typora-default .cm-code {
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  }@import "";
  @import "";
  @import "";

  :root {
      --bg-color:  #363B40;
      --side-bar-bg-color: #2E3033;
      --text-color: #b8bfc6;

      --select-text-bg-color:#4a89dc;

      --item-hover-bg-color: #0a0d16;
      --control-text-color: #b7b7b7;
      --control-text-hover-color: #eee;
      --window-border: 1px solid #555;

      --active-file-bg-color: rgb(34, 34, 34);
      --active-file-border-color: #8d8df0;

      --primary-color: #a3d5fe;

      --active-file-text-color: white;
      --item-hover-bg-color: #70717d;
      --item-hover-text-color: white;
      --primary-color: #6dc1e7;

      --rawblock-edit-panel-bd: #333;

      --search-select-bg-color: #428bca;
  }

  html {
      font-size: 16px;
  }

  html,
  body {
      -webkit-text-size-adjust: 100%;
      -ms-text-size-adjust: 100%;
      background: #363B40;
      background: var(--bg-color);
      fill: currentColor;
      line-height: 1.625rem;
  }

  #write {
      max-width: 914px;
  }

  html,
  body,
  button,
  input,
  select,
  textarea,
  div.code-tooltip-content {
      color: #b8bfc6;
      border-color: transparent;
  }

  div.code-tooltip,
  .md-hover-tip .md-arrow:after {
      background: #333;
  }

  .popover.bottom > .arrow:after {
      border-bottom-color: #333;
  }

  html,
  body,
  button,
  input,
  select,
  textarea {
      font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  }

  hr {
      height: 2px;
      border: 0;
      margin: 24px 0 !important;
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  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
      font-family: "Lucida Grande", "Corbel", sans-serif;
      font-weight: normal;
      clear: both;
      -ms-word-wrap: break-word;
      word-wrap: break-word;
      margin: 0;
      padding: 0;
      color: #DEDEDE
  }

  h1 {
      font-size: 2.5rem;
      /* 36px */
      line-height: 2.75rem;
      /* 40px */
      margin-bottom: 1.5rem;
      /* 24px */
      letter-spacing: -1.5px;
  }

  h2 {
      font-size: 1.63rem;
      /* 24px */
      line-height: 1.875rem;
      /* 30px */
      margin-bottom: 1.5rem;
      /* 24px */
      letter-spacing: -1px;
      font-weight: bold;
  }

  h3 {
      font-size: 1.17rem;
      /* 18px */
      line-height: 1.5rem;
      /* 24px */
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      /* 24px */
      letter-spacing: -1px;
      font-weight: bold;
  }

  h4 {
      font-size: 1.12rem;
      /* 16px */
      line-height: 1.375rem;
      /* 22px */
      margin-bottom: 1.5rem;
      /* 24px */
      color: white;
  }

  h5 {
      font-size: 0.97rem;
      /* 16px */
      line-height: 1.25rem;
      /* 22px */
      margin-bottom: 1.5rem;
      /* 24px */
      font-weight: bold;
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  h6 {
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      /* 16px */
      line-height: 1rem;
      /* 16px */
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      color: white;
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  @media (min-width: 980px) {
      h3.md-focus:before,
      h4.md-focus:before,
      h5.md-focus:before,
      h6.md-focus:before {
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          border: 1px solid #ddd;
          border-radius: 3px;
          position: absolute;
          left: -1.642857143rem;
          top: .357142857rem;
          float: left;
          font-size: 9px;
          padding-left: 2px;
          padding-right: 2px;
          vertical-align: bottom;
          font-weight: normal;
          line-height: normal;
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      h3.md-focus:before {
          content: 'h3';
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      h4.md-focus:before {
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      h5.md-focus:before {
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          top: 0px;
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      h6.md-focus:before {
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  a {
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  a:hover {
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  a:focus {
      outline: thin dotted;
  }

  sup.md-footnote {
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      color: #ddd;
  }

  p {
      -ms-word-wrap: break-word;
      word-wrap: break-word;
  }

  p,
  ul,
  dd,
  ol,
  hr,
  address,
  pre,
  table,
  iframe,
  .wp-caption,
  .wp-audio-shortcode,
  .wp-video-shortcode {
      margin-top: 0;
      margin-bottom: 1.5rem;
      /* 24px */
  }

  li > blockquote {
  	margin-bottom: 0;
  }

  audio:not([controls]) {
      display: none;
  }

  [hidden] {
      display: none;
  }

  ::-moz-selection {
      background: #4a89dc;
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      text-shadow: none;
  }

  *.in-text-selection,
  ::selection {
      background: #4a89dc;
      color: #fff;
      text-shadow: none;
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  ul,
  ol {
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      /* 30px */
  }

  ul {
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  }

  ol {
      list-style: decimal;
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  ul ul,
  ol ol,
  ul ol,
  ol ul {
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  b,
  th,
  dt,
  strong {
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  i,
  em,
  dfn,
  cite {
      font-style: italic;
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  blockquote {
      padding-left: 1.875rem;
      margin: 0 0 1.875rem 1.875rem;
      border-left: solid 2px #474d54;
      padding-left: 30px;
      margin-top: 35px;
  }

  pre,
  code,
  kbd,
  tt,
  var {
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      font-family: Monaco, Consolas, "Andale Mono", "DejaVu Sans Mono", monospace;
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  kbd {
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      font-size: 90%;
      color: #fff;
      background-color: #333;
      border-radius: 3px;
      box-shadow: inset 0 -1px 0 rgba(0,0,0,.25);
  }

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      padding: 10px 10px 10px 30px;
      margin-bottom: 20px;
      background: #333;
  }

  .CodeMirror-gutters {
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      border-right: 1px solid transparent;
  }

  .enable-diagrams pre.md-fences[lang="sequence"] .code-tooltip,
  .enable-diagrams pre.md-fences[lang="flow"] .code-tooltip,
  .enable-diagrams pre.md-fences[lang="mermaid"] .code-tooltip {
      bottom: -2.2em;
      right: 4px;
  }

  code,
  kbd,
  tt,
  var {
      padding: 2px 5px;
  }

  table {
      max-width: 100%;
      width: 100%;
      border-collapse: collapse;
      border-spacing: 0;
  }

  th,
  td {
      padding: 5px 10px;
      vertical-align: top;
  }

  a {
      -webkit-transition: all .2s ease-in-out;
      transition: all .2s ease-in-out;
  }

  hr {
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      /* variable */
  }

  h1 {
      margin-top: 2em;
  }

  a {
      color: #e0e0e0;
      text-decoration: underline;
  }

  a:hover {
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  .md-inline-math script {
      color: #81b1db;
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  b,
  th,
  dt,
  strong {
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      /* variable */
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  mark {
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  blockquote {
      color: #9DA2A6;
  }

  table a {
      color: #DEDEDE;
      /* variable */
  }

  th,
  td {
      border: solid 1px #474d54;
      /* variable */
  }

  .task-list {
      padding-left: 0;
  }

  .md-task-list-item {
      padding-left: 1.25rem;
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  .md-task-list-item > input {
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  .md-task-list-item > input:before {
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      width: 0.875rem;
      height: 0.875rem;
      vertical-align: middle;
      text-align: center;
      border: 1px solid #b8bfc6;
      background-color: #363B40;
      margin-top: -0.4rem;
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  .md-task-list-item > input:checked:before,
  .md-task-list-item > input[checked]:before {
      content: '\221A';
      /*◘*/
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      line-height: 0.625rem;
      color: #DEDEDE;
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  /** quick open **/
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      background-color: #525C65;
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      background-color: #525C65;
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      border: 0;
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  .typora-quick-open-item {
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  .typora-quick-open-item.active,
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      color: white;
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      background-color: rgba(77, 139, 219, 0.8);
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  .typora-search-spinner > div {
    background-color: #fff;
  }

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      border-bottom: 1px dashed #ccc;
      background: transparent;
      padding-bottom: 0.6em;
      line-height: 1.6em;
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  .btn .btn-default {
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  .ty-table-edit {
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  #write>h4:before,
  #write>h5:before,
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      top: 0.2rem;
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  #write>h4.md-focus:before {
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  .dropdown-menu .btn:focus,
  .md-toc .btn:hover,
  .md-toc .btn:focus {
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      background: black;
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      background-color: #363B40;
      color: white;
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  h1.md-focus .md-attr,
  h2.md-focus .md-attr,
  h3.md-focus .md-attr,
  h4.md-focus .md-attr,
  h5.md-focus .md-attr,
  h6.md-focus .md-attr,
  .md-header-span .md-attr {
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      display: inline;
  }

  .md-comment {
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      opacity: 1;
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  #math-inline-preview .md-arrow:after {
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  .modal-content input {
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      color: white;
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      color: white;
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  .modal-backdrop {
      background-color: rgba(174, 174, 174, 0.7);
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  .modal-content .btn-primary {
      border-color: var(--primary-color);
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  .md-table-resize-popover {
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  .form-inline .input-group .input-group-addon {
      color: white;
  }

  #md-searchpanel {
      border-bottom: 1px dashed grey;
  }

  /** UI for electron */

  .context-menu,
  #spell-check-panel,
  #footer-word-count-info {
      background-color: #42464A;
  }

  .context-menu.dropdown-menu .divider,
  .dropdown-menu .divider {
      background-color: #777777;
  }

  footer {
      color: inherit;
  }

  @media (max-width: 1000px) {
      footer {
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      }
      footer:hover {
          color: inherit;
      }
  }

  #file-info-file-path .file-info-field-value:hover {
      background-color: #555;
      color: #dedede;
  }

  .megamenu-content,
  .megamenu-opened header {
      background: var(--bg-color);
  }

  .megamenu-menu-panel h2,
  .megamenu-menu-panel h1,
  .long-btn {
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  }

  .megamenu-menu-panel input[type='text'] {
      background: inherit;
      border: 0;
      border-bottom: 1px solid;
  }

  #recent-file-panel-action-btn {
      background: inherit;
      border: 1px grey solid;
  }

  .megamenu-menu-panel .dropdown-menu > li > a {
      color: inherit;
      background-color: #2F353A;
      text-decoration: none;
  }

  .megamenu-menu-panel table td:nth-child(1) {
      color: inherit;
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  <div  id='write'  class = 'is-node'><h1><a name="practicas-para-realizar-en-el-cluster-de-raspberry-pi" class="md-header-anchor"></a><span>Practicas para realizar en el cluster de Raspberry Pi</span></h1><h2><a name="1--basic-trafic-engineering" class="md-header-anchor"></a><span>1- Basic Trafic Engineering</span></h2><blockquote><p><span>El objetivo de esta practica es entender el concepto de las redes definidas por software y sus ventajas, asi como mostrar como el controlador SDN puede decirle a los OVS que se comporten de una manera u otra, enviando el trafico deseado de un sitio a otro.</span></p></blockquote><h4><a name="-creacion-de-topologia" class="md-header-anchor"></a><span>-Creacion de topologia</span></h4><p><span>	</span><span>Para empezar, vamos a crear una topologia de 3 switches y 3 hosts, conectados como se muestra en la siguiente figura. Posteriormente vamos a iniciar el controlador con la aplicacion </span><em><span>Switching</span></em><span>.</span></p><p><img src="img/toposwitch.png" align="left" style="zoom:40%;" width="500" /></p><p>&nbsp;</p><p><span>	</span><span>Observe y asegurese que los flowtable de los switches estan por defecto. Una vez visto esto, el objetivo es simplemente obtener conectividad entre h1 y h2, modificando estos flow entry mediante una API REST haciendo peticiones al controlador SDN. </span></p><h4><a name="--configuracion-de-los-ovs-mediante-peticiones-al-controlador-sdn" class="md-header-anchor"></a><span>- Configuracion de los OVS mediante peticiones al controlador SDN</span></h4><p><span>	</span><span>Para esto, nos dirijimos a la consola de la Raspberry principal (rpi1) y en la carpeta scripts ejecutamos el codigo </span><em><span>basicflow.sh</span></em><span>, el cual se tiene una muestra mas abajo, y no es mas que realizar POST al controlador con los parametros que deseamos configurar. En esta peticion se envia el DPID del switch deseado, y los respectivos campos de OpenFlow, tales como el match y los actions. </span></p><pre spellcheck="false" class="md-fences md-end-block ty-contain-cm modeLoaded" lang="bash" style="break-inside: unset;"><div class="CodeMirror cm-s-inner CodeMirror-wrap" lang="bash"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 4px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><span><span>​</span>x</span></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#!/bin/bash</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">: <span class="cm-string">'</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">Written by: Felix G. Tejada</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">This script is applied to a linear <span class="cm-number">3</span> topo, just <span class="cm-keyword">for</span> show the example of basic TE.</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-string">'</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> DELETE http://localhost:8080/stats/flowentry/clear/1</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"adding new flows entry to switches 1 and 2"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"dpid"</span>: <span class="cm-number">1</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"cookie"</span>: <span class="cm-number">0</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"cookie_mask"</span>: <span class="cm-number">0</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"table_id"</span>: <span class="cm-number">0</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"idle_timeout"</span>: <span class="cm-number">0</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"hard_timeout"</span>: <span class="cm-number">0</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"priority"</span>: <span class="cm-number">100</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"flags"</span>: <span class="cm-number">0</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"match"</span>:{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp; &nbsp;<span class="cm-string">"in_port"</span>:1</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp;  },</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp;<span class="cm-string">"actions"</span>:[</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="cm-string">"type"</span>:<span class="cm-string">"OUTPUT"</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="cm-string">"port"</span>: <span class="cm-number">2</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp; &nbsp; &nbsp;  }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> &nbsp;  ]</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"> }<span class="cm-string">' http://localhost:8080/stats/flowentry/add</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 728px;"></div><div class="CodeMirror-gutters" style="display: none; height: 728px;"></div></div></div></pre><p><span>	</span><span>Notese que la idea es limpiar todo lo que tenga el switch en ese momento, y decirle basicamente &quot;Todo el trafico recivido por el puerto 1 sacalo por el puerto 2&quot;. Siguiendo esta logica, se crea un camino por el cual fluye el trafico, en nuestro ejemplo, conectividad entre h1 y h2.</span></p><p><span>	</span><span>Una vez ejecutado, compruebe que se actualizaron los flows de los switches 1 y 2, ademas de que existe conectividad entre h1 y h2 haciendo ping. </span></p><p><span>	</span><span>Compruebe que no existe conectividad entre h1 y h3, debido a que no existe ninguna ruta especificada.</span></p><h2><a name="2--enrutamiento-estatico-con-api-rest" class="md-header-anchor"></a><span>2- Enrutamiento estatico con API REST</span></h2><blockquote><p><span>El objetivo de esta practica consiste en crear una topologia serial de 3 switches y 3 host, como se muestra en la siguiente imagen. Asi, solo se debe tener conectividad entre todas las redes de h1,h2 y h3.</span></p></blockquote><p><img src="img/toporouting.png" align="left" style="zoom:40%;" width="500" /></p><p><span>	</span><span>Para esto, mediante la pagina web cree la topologia, inicie el controlador con la aplicacion </span><em><span>REST Router</span></em><span> , confirme que en el controlador se muestra que los switches fueron reconocidos y proceda a configurar las direcciones IP de los hosts. </span></p><h4><a name="-configuracion-de-direcciones-ip-a-los-hosts-virtuales" class="md-header-anchor"></a><span>-Configuracion de direcciones IP a los hosts virtuales</span></h4><p><span>	</span><span>Para configurar estas direcciones IP, utilice los comandos </span><code>h[x] ip addr del 10.0.0.[x]/8 dev h[x]-eth0</code><span> para eliminar la IP por defecto, siendo [x] el host deseado, y asimismo con el comando </span><code>ip addr add</code><span> configure las demas direcciones. Asi mismo, configure los gateway necesarios con el comando </span><code>ip route add default via [direccion_ip_gateway]</code><span>. </span></p><p><span>	</span><span>Entendemos que este proceso puede ser algo tedioso, por lo cual hemos creado un script, el cual se encuentra en la carpeta </span><em><span>scripts</span></em><span> de la Raspberry principal. Para ejecutarlo, simplemente ejecutelo con </span><code>./hostadress.sh</code><span>. </span></p><p><span>	</span><span>Compruebe mediante la web que se realizaron las configuraciones con el comando </span><code>h[x] ifconfig h[x]-eth0</code><span> </span></p><h4><a name="-programar-el-controlador-para-que-los-switches-conozcan-las-redes" class="md-header-anchor"></a><span>-Programar el controlador para que los switches conozcan las redes</span></h4><p><span>	</span><span>Par este paso, necesita hacer uso del API REST de la aplicacion de RYU. </span></p><p><span>	</span><span>Entendemos que esto puede ser un poco tedioso, por lo cual hemos creado un script que se encuentra en la carpeta </span><em><span>scripts</span></em><span> que realiza estas configuraciones de manera automatica, solo ejecutandolo con </span><code>./routerflows.sh</code><span>. Mas abajo se muestra un fragmento del script, para que se entienda que es lo que esta ocurriendo.</span></p><pre spellcheck="false" class="md-fences md-end-block ty-contain-cm modeLoaded" lang="bash" style="break-inside: unset;"><div class="CodeMirror cm-s-inner CodeMirror-wrap" lang="bash"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 4px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#!/bin/bash</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">: <span class="cm-string">'</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">Este script hace peticiones HTTP POST a la API REST del codigo que debe estar corriendo</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">en el controlador,llamado rest_router.py.</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">Written by: Felix Tejada &amp; Oscar Rodriguez</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-string">'</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"Setting address to the routers..."</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{"address":"172.16.10.1/24"}'</span> http://localhost:8080/router/0000000000000002</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{"address": "172.16.30.1/24"}'</span> http://localhost:8080/router/0000000000000002</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{"address": "192.168.10.1/24"}'</span> http://localhost:8080/router/0000000000000002</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{"address":"172.16.20.1/24"}'</span> http://localhost:8080/router/0000000000000001</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{"address": "172.16.30.30/24"}'</span> http://localhost:8080/router/0000000000000001</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{"address": "192.168.30.1/24"}'</span> http://localhost:8080/router/0000000000000003</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">curl</span> <span class="cm-attribute">-X</span> POST <span class="cm-attribute">-d</span> <span class="cm-string">'{"address": "192.168.10.20/24"}'</span> http://localhost:8080/router/0000000000000003</span></pre></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 650px;"></div><div class="CodeMirror-gutters" style="display: none; height: 650px;"></div></div></div></pre><p><span>	</span><span>Una vez ejecutado, mediante la pagina web, compruebe que cada switch tiene seteado sus flow entrys correctamente en el apartado </span><em><span>flow tables</span></em><span>. </span></p><p><span>	</span><span>Compruebe que existe conectividad entre h1 y h2 ejecutando el comando </span><code>h1 ping -c 4 h2</code><span>. Para ver el camino recorrido, ejecute </span><code>h1 traceroute h2</code><span>.</span></p><p><span>	</span><span>Si desea eliminar todos los flowentry de los switches, y simplemente dejarlos con su flow por defecto, en la pagina web presione el boton </span><em><span>Reset flows</span></em><span> del apartado </span><em><span>Flow Tables</span></em><span>.</span></p><h2><a name="3--creando-un-micro-web-server" class="md-header-anchor"></a><span>3- Creando un micro web server</span></h2><blockquote><p><span>El objetivo de esta practica es la de comprobar conectividad entre dos host virtuales, por ejemplo h1 y h2, ejecutando un servicio web.</span></p></blockquote><h3><a name="preparando-archivos" class="md-header-anchor"></a><span>Preparando archivos</span></h3><p><span>Para poder hacer una pequna web que podamos navegar vamos a hacer lo siguiente:</span>
  <span>Necesitamos crear un archivo, el cual sera un script en bash con lo que deseamos ver en el cliente. Para crear esto en un host especifico, escribimos </span><code>h[x] echo &quot;[pegar texto de abajo]&quot; &gt; test.sh</code><span> , donde x es el id del host deseado.</span></p><pre spellcheck="false" class="md-fences md-end-block ty-contain-cm modeLoaded" lang="bash" style="break-inside: unset;"><div class="CodeMirror cm-s-inner CodeMirror-wrap" lang="bash"><div style="overflow: hidden; position: relative; width: 3px; height: 0px; top: 0px; left: 4px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"></textarea></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"></div><div class="CodeMirror-gutter-filler" cm-not-content="true"></div><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"></div><div style="position: relative; z-index: 1;"></div><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"></div><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#!/bin/bash</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"************PRINT SOME TEXT***************\n"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"Hello World!!!"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"\n"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"Resources:"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">vmstat <span class="cm-attribute">-S</span> M</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"\n"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"Addresses:"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"</span><span class="cm-quote">$(ifconfig)</span><span class="cm-string">"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"\n"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="">​</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-builtin">echo</span> <span class="cm-string">"</span><span class="cm-quote">$(gpio readall)</span><span class="cm-string">"</span></span></pre></div></div></div></div></div><div style="position: absolute; height: 0px; width: 1px; border-bottom: 0px solid transparent; top: 416px;"></div><div class="CodeMirror-gutters" style="display: none; height: 416px;"></div></div></div></pre><h3><a name="iniciando-el-servidor" class="md-header-anchor"></a><span>Iniciando el servidor</span></h3><p><span>En el host que funcionara como servidor corremos el comando  </span><code>h[x] while true; do { echo -e &#39;HTTP/1.1 200 OK\r\n&#39;; sh test.sh; } | nc -l 1234 -q 1; done &amp;</code><span>, donde x es el id del host deseado.</span></p><h3><a name="accediendo-al-servidor" class="md-header-anchor"></a><span>Accediendo al servidor</span></h3><p><span>En cualquier otro host que tenga conectividad con el server solo tienes que realizar </span><code>h[x] curl -X GET http://_ipdelserver_:124</code><span> , siendo x el id de cualquier host. Asi podras ver tu web servida</span>
  <span>En caso de acceder desde una consola se puede instalar el software w3m y con este navegador par aconsola acceder a la web.</span></p></div>
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