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Updating files in-place
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Updating multiple values with a script
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From STDIN
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<a href="#adding-new-fields" title="Adding new fields" class="md-nav__link">
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Adding new fields
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<li class="md-nav__item">
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<a href="#updating-files-in-place" title="Updating files in-place" class="md-nav__link">
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Updating files in-place
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<li class="md-nav__item">
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<a href="#updating-multiple-values-with-a-script" title="Updating multiple values with a script" class="md-nav__link">
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Updating multiple values with a script
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</a>
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</li>
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<a href="#values-starting-with-a-hyphen-or-dash" title="Values starting with a hyphen (or dash)" class="md-nav__link">
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Values starting with a hyphen (or dash)
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<article class="md-content__inner md-typeset">
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<h1>Write/Update</h1>
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<pre><code>yaml w <yaml_file|json_file> <path> <new value>
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</code></pre>
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<p>This command can take a json file as input too, and will output yaml unless specified to export as json (-j)</p>
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<h3 id="to-stdout">To Stdout<a class="headerlink" href="#to-stdout" title="Permanent link">¶</a></h3>
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<p>Given a sample.yaml file of:</p>
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<pre><code class="yaml">b:
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c: 2
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yaml w sample.yaml b.c cat
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</code></pre>
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<p>will output:</p>
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<pre><code class="yaml">b:
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c: cat
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</code></pre>
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<h3 id="from-stdin">From STDIN<a class="headerlink" href="#from-stdin" title="Permanent link">¶</a></h3>
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<pre><code class="bash">cat sample.yaml | yaml w - b.c blah
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</code></pre>
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<h3 id="adding-new-fields">Adding new fields<a class="headerlink" href="#adding-new-fields" title="Permanent link">¶</a></h3>
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<p>Any missing fields in the path will be created on the fly.</p>
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<p>Given a sample.yaml file of:</p>
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<pre><code class="yaml">b:
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c: 2
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yaml w sample.yaml b.d[0] "new thing"
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</code></pre>
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<p>will output:</p>
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<pre><code class="yaml">b:
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c: cat
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d:
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- new thing
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</code></pre>
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<h3 id="updating-files-in-place">Updating files in-place<a class="headerlink" href="#updating-files-in-place" title="Permanent link">¶</a></h3>
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<p>Given a sample.yaml file of:</p>
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<pre><code class="yaml">b:
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c: 2
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yaml w -i sample.yaml b.c cat
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</code></pre>
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<p>will update the sample.yaml file so that the value of 'c' is cat.</p>
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<h3 id="updating-multiple-values-with-a-script">Updating multiple values with a script<a class="headerlink" href="#updating-multiple-values-with-a-script" title="Permanent link">¶</a></h3>
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<p>Given a sample.yaml file of:</p>
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<pre><code class="yaml">b:
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c: 2
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e:
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- name: Billy Bob
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</code></pre>
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<p>and a script update_instructions.yaml of:</p>
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<pre><code class="yaml">b.c: 3
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b.e[0].name: Howdy Partner
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yaml w -s update_instructions.yaml sample.yaml
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</code></pre>
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<p>will output:</p>
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<pre><code class="yaml">b:
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c: 3
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e:
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- name: Howdy Partner
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</code></pre>
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<p>And, of course, you can pipe the instructions in using '-':</p>
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<pre><code class="bash">cat update_instructions.yaml | yaml w -s - sample.yaml
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</code></pre>
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<h3 id="values-starting-with-a-hyphen-or-dash">Values starting with a hyphen (or dash)<a class="headerlink" href="#values-starting-with-a-hyphen-or-dash" title="Permanent link">¶</a></h3>
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<p>The flag terminator needs to be used to stop the app from attempting to parse the subsequent arguments as flags:</p>
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<pre><code>yaml w -- my.path -3
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</code></pre>
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<p>will output</p>
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<pre><code class="yaml">my:
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path: -3
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</code></pre>
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<i class="md-icon md-icon--arrow-forward md-footer-nav__button"></i>
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</div>
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</a>
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</nav>
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<div class="md-footer-meta md-typeset">
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<div class="md-footer-meta__inner md-grid">
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<div class="md-footer-copyright">
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powered by
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<a href="http://www.mkdocs.org" title="MkDocs">MkDocs</a>
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and
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<a href="http://squidfunk.github.io/mkdocs-material/" title="Material for MkDocs">
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<div class="md-footer-social">
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
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<a href="https://github.com/mikefarah" class="md-footer-social__link fa fa-github"></a>
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<a href="https://www.linkedin.com/in/mike-farah-b5a75b2/" class="md-footer-social__link fa fa-linkedin"></a>
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</footer>
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<script src="../assets/javascripts/application-f3ab9e5ff8.js"></script>
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<script>app.initialize({url:{base:".."}})</script>
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</body>
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</html> |