https://waylonwalker.com/tags/justfile/atom.xml 2024-05-14T22:29:49Z All posts with the tag "justfile" Waylon Walker markata-go https://waylonwalker.com/thought-276/ 2024-05-14T22:29:49Z 2024-05-14T22:29:49Z

!https://just.systems/man/en/safer-bash-shebang-recipes.html?highlight=pipefail#safer-bash-shebang-recipes

<div class="embed-card embed-card-external"> <a href="https://just.systems/man/en/safer-bash-shebang-recipes.html?highlight=pipefail#safer-bash-shebang-recipes" class="embed-card-link has-avatar has-avatar-before" target="_blank" rel="noopener noreferrer" style="--favicon-url: url(&#39;/assets/markata/link-avatars/just.systems.ico&#39;);" data-favicon="/assets/markata/link-avatars/just.systems.ico"> <div class="embed-card-content"> <div class="embed-card-title">Safer Bash Shebang Recipes - Just Programmer&#39;s Manual</div> <div class="embed-card-meta">just.systems</div> </div> </a> </div> <p>When using justfiles each line is ran separately from the last, unless you specify the file to be ran by something other than just such as bash. If you want variables to persist you need to set a shebang.</p> <p>Also if you are using your script i a way that you want it to exit when it fails you need to set -e and -o pipefail. This is critical if you are thinking about using just for production scripts like ci/cd. I’ve hit too bugs where ci passes, but no artifacts were created issues for this exact reason.</p> <pre class="chroma"><code><span class="line"><span class="cl">foo: </span></span><span class="line"><span class="cl"> <span class="c1">#!/usr/bin/env bash</span> </span></span><span class="line"><span class="cl"> <span class="nb">set</span> -euxo pipefail </span></span><span class="line"><span class="cl"> <span class="nv">hello</span><span class="o">=</span><span class="s1">&#39;Yo&#39;</span> </span></span><span class="line"><span class="cl"> <span class="nb">echo</span> <span class="s2">&#34;</span><span class="nv">$hello</span><span class="s2"> from Bash!&#34;</span> </span></span></code></pre><div class="admonition note"> <p class="admonition-title">Note</p> <p>This post is a <a href="/thoughts/" class="wikilink" data-title="Thoughts" data-description="These are generally my thoughts on a web page or some sort of url, except a rare few don&#39;t have a link. These are dual published off of my..." data-date="2024-04-01" data-preview="These are generally my thoughts on a web page or some sort of url, except a rare few don&#39;t have a link. These are dual published off of my...">thought</a>. It’s a short note that I make about someone else’s content online <a href="/tags/thoughts/" class="hashtag-tag" data-tag="thoughts" data-count="2" data-reading-time="3" data-reading-time-text="3 minutes">#thoughts</a></p> </div> Waylon Walker hello@waylonwalker.com https://waylonwalker.com