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110 lines
4.3 KiB
110 lines
4.3 KiB
11 months ago
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<title>Julio Biason .Me 4.3</title>
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<link rel="stylesheet" href="https://blog.juliobiason.me/print.css" media="print">
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<div class="container sidebar-sticky">
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<div class="sidebar-about">
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<a href="https://blog.juliobiason.me"><h1>Julio Biason .Me 4.3</h1></a>
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<p class="lead">Old school dev living in a 2.0 dev world</p>
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</div>
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<ul class="sidebar-nav">
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<li class="sidebar-nav-item"><a href="/">English</a></li>
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<li class="sidebar-nav-item"><a href="/pt">Português</a></li>
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<li class="sidebar-nav-item"><a href="/tags">Tags (EN)</a></li>
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<li class="sidebar-nav-item"><a href="/pt/tags">Tags (PT)</a></li>
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<div class="content container">
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<div class="post">
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<h1 class="post-title">Using `alternatives`</h1>
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<span class="post-date">
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2021-06-21
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<a href="https://blog.juliobiason.me/tags/linux/">#linux</a>
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<a href="https://blog.juliobiason.me/tags/cli/">#cli</a>
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<a href="https://blog.juliobiason.me/tags/vim/">#vim</a>
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<a href="https://blog.juliobiason.me/tags/alternatives/">#alternatives</a>
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</span>
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<p><code>alternatives</code> allows one to select a different executable for a normal command
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line program, but how does it work?</p>
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<span id="continue-reading"></span>
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<p>I'll give an example: I enjoy using NeoVim instead of Vim for different
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reasons. But there is a nag that I keep hitting: NeoVim executable is called
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<code>nvim</code> instead of the <code>vim</code> for... Vim.</p>
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<p>I could change two different environment variables, <code>VISUAL</code> and <code>EDITOR</code> to
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<code>nvim</code>, so any application that wants to open an external editor would call
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NeoVim instead. But, unfortunately, my muscle memory doesn't work with
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environment variables, so either I keep correcting myself to type <code>nvim</code>
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instead of <code>vim</code> or I find a way to, when I call <code>vim</code>, it should actually call
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<code>nvim</code>.</p>
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<p>The initial solution is to use aliases, so <code>alias vim nvim</code> (in Fish) would
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make <code>vim</code> actually run <code>nvim</code>... except when I use <code>sudo</code>, which doesn't
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expand the alias before its call. The actual solution would be something
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global, that takes care of this.</p>
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<p>And that's what <code>alternatives</code> do.</p>
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<p>In my case, what I actually need to do is run the follow command:</p>
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<pre style="background-color:#2b303b;color:#c0c5ce;"><code><span>sudo alternatives --install /usr/bin/nvim vim /usr/bin/vim 1
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</span></code></pre>
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<p>What does it do:</p>
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<ul>
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<li>Say I want to use <code>/usr/bin/nvim</code></li>
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<li>... which I'll call "vim" (which is the name <code>alternatives</code> uses in its
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configuration)</li>
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<li>... making a symlink into <code>/usr/bin/vim</code></li>
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<li>... with priority 1.</li>
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</ul>
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</div>
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</div>
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</body>
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</html>
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