guage-shell" data-lang="shell"><span style="display:flex;"><span>$ go get github.com/spf13/cast@v1.4.1
</span></span><span style="display:flex;"><span><span style="color:#75715e"># 输出如下</span>
</span></span><span style="display:flex;"><span>go: added github.com/spf13/cast v1.4.1
</span></span></code></pre></div><ul>
<li>打开 <code>go.mod</code> 文件，内容如下:</li>
</ul>
<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-