<p>わりとファジーに計算してくれるっぽい。</p>
<div class="code-block-container"><pre class="language-bash"><code class="language-bash"><span class="token assign-left variable">a</span><span class="token operator">=</span><span class="token string">'    1    '</span> <span class="token comment"># a = 1</span>

<span class="token assign-left variable">b</span><span class="token operator">=</span><span class="token variable"><span class="token variable">$((</span>$a<span class="token operator">+</span><span class="token number">1</span><span class="token variable">))</span></span>   <span class="token comment"># b = a + 1</span>

<span class="token builtin class-name">echo</span> <span class="token variable">$b</span>       <span class="token comment"># =&gt; 2</span>
</code></pre></div><h1 id="%E7%92%B0%E5%A2%83">
<a class="header-anchor-link" href="#%E7%92%B0%E5%A2%83" aria-hidden="true"></a> 環境</h1>
<ul>
<li>bash 3.2</li>
</ul>
<p></p>
<h1 id="%E3%83%81%E3%83%A3%E3%83%83%E3%83%88%E3%83%A1%E3%83%B3%E3%83%90%E3%83%BC%E5%8B%9F%E9%9B%86">
<a class="header-anchor-link" href="#%E3%83%81%E3%83%A3%E3%83%83%E3%83%88%E3%83%A1%E3%83%B3%E3%83%90%E3%83%BC%E5%8B%9F%E9%9B%86" aria-hidden="true"></a> チャットメンバー募集</h1>
<p>何か質問、悩み事、相談などあればLINEオープンチャットもご利用ください。</p>
<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__307bf94a14ea8" src="https://embed.zenn.studio/card#zenn-embedded__307bf94a14ea8" data-content="https%3A%2F%2Fline.me%2Fti%2Fg2%2FeEPltQ6Tzh3pYAZV8JXKZqc7PJ6L0rpm573dcQ" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://line.me/ti/g2/eEPltQ6Tzh3pYAZV8JXKZqc7PJ6L0rpm573dcQ" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://line.me/ti/g2/eEPltQ6Tzh3pYAZV8JXKZqc7PJ6L0rpm573dcQ</a></p>
<h1 id="twitter">
<a class="header-anchor-link" href="#twitter" aria-hidden="true"></a> Twitter</h1>
<p><span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__93574d499aa2c" src="https://embed.zenn.studio/card#zenn-embedded__93574d499aa2c" data-content="https%3A%2F%2Ftwitter.com%2FYumaInaura" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://twitter.com/YumaInaura" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://twitter.com/YumaInaura</a></p>
<p></p>
<h1 id="%E5%85%AC%E9%96%8B%E6%97%A5%E6%99%82">
<a class="header-anchor-link" href="#%E5%85%AC%E9%96%8B%E6%97%A5%E6%99%82" aria-hidden="true"></a> 公開日時</h1>
<p>2016-06-24</p>


Bash | シェルの計算は変数が文字列でもスペースが入っていても大丈夫

環境

チャットメンバー募集

Twitter

公開日時

Discussion