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Prefix
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Prefix
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Updating files in-place
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Multiple Documents - prefix a single document
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<a href="#multiple-documents-prefix-all-documents" title="Multiple Documents - prefix all documents" class="md-nav__link">
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Multiple Documents - prefix all documents
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<a href="#arbitrary-depth" title="Arbitrary depth" class="md-nav__link">
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Arbitrary depth
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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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</a>
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</li>
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<li class="md-nav__item">
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<a href="#multiple-documents-prefix-a-single-document" title="Multiple Documents - prefix a single document" class="md-nav__link">
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Multiple Documents - prefix a single document
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</a>
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</li>
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<li class="md-nav__item">
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<a href="#multiple-documents-prefix-all-documents" title="Multiple Documents - prefix all documents" class="md-nav__link">
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Multiple Documents - prefix all documents
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</a>
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<article class="md-content__inner md-typeset">
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<a href="https://github.com/mikefarah/yq/edit/master/docs/prefix.md" title="Edit this page" class="md-icon md-content__icon"></a>
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<h1>Prefix</h1>
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<p>Paths can be prefixed using the 'prefix' command.
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The complete yaml content will be nested inside the new prefix path.</p>
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<pre><code>yq p <yaml_file> <path>
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</code></pre>
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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 data1.yaml file of:</p>
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<pre><code class="yaml">a: simple
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b: [1, 2]
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yq p data1.yaml c
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</code></pre>
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<p>will output:</p>
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<pre><code class="yaml">c:
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a: simple
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b: [1, 2]
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</code></pre>
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<h3 id="arbitrary-depth">Arbitrary depth<a class="headerlink" href="#arbitrary-depth" title="Permanent link">¶</a></h3>
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<p>Given a data1.yaml file of:</p>
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<pre><code class="yaml">a:
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b: [1, 2]
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yq p data1.yaml c.d
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</code></pre>
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<p>will output:</p>
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<pre><code class="yaml">c:
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d:
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a:
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b: [1, 2]
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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 data1.yaml file of:</p>
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<pre><code class="yaml">a: simple
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b: [1, 2]
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yq p -i data1.yaml c
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</code></pre>
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<p>will update the data1.yaml file so that the path 'c' is prefixed to all other paths.</p>
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<h3 id="multiple-documents-prefix-a-single-document">Multiple Documents - prefix a single document<a class="headerlink" href="#multiple-documents-prefix-a-single-document" title="Permanent link">¶</a></h3>
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<p>Given a data1.yaml file of:</p>
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<pre><code class="yaml">something: else
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---
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a: simple
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b: cat
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yq p -d1 data1.yaml c
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</code></pre>
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<p>will output:</p>
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<pre><code class="yaml">something: else
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---
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c:
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a: simple
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b: cat
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</code></pre>
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<h3 id="multiple-documents-prefix-all-documents">Multiple Documents - prefix all documents<a class="headerlink" href="#multiple-documents-prefix-all-documents" title="Permanent link">¶</a></h3>
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<p>Given a data1.yaml file of:</p>
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<pre><code class="yaml">something: else
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---
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a: simple
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b: cat
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</code></pre>
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<p>then</p>
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<pre><code class="bash">yq p -d'*' data1.yaml c
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</code></pre>
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<p>will output:</p>
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<pre><code class="yaml">c:
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something: else
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---
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c:
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a: simple
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b: cat
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</code></pre>
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