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    <div class="image-container-fill" style="padding-bottom: 22.0%;"></div>
    <div class="image-view" data-width="441" data-height="97"><img
            data-original-src="//upload-images.jianshu.io/upload_images/2733312-11e482557148c9b5.png"
            data-original-width="441" data-original-height="97" data-original-format="image/png"
            data-original-filesize="12765" data-image-index="0" style="cursor: zoom-in;" class=""
            src="//upload-images.jianshu.io/upload_images/2733312-11e482557148c9b5.png?imageMogr2/auto-orient/strip|imageView2/2/w/441/format/webp">
    </div>
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<div class="image-caption"></div>

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<p>curl 是一种命令行工具,作用是发出网络请求,然后获取数据,显示在"标准输出"(stdout)上面。它支持多种协议,下面列举其常用功能。</p>
<h5>一、查看网页源码</h5>
<p>直接在 curl 命令后加上网址,就可以看到网页源码。以网址 <a href="https://link.jianshu.com?t=http://www.sina.com" target="_blank"

                                 rel="nofollow">www.sina.com</a>为例(选择该网址,主要因为它的网页代码较短)。</p>

<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>

<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span

    class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span

    class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;</span>title</span><span class="token punctuation">&gt;</span></span>301 Moved Permanently<span
            class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;/</span>title</span><span
            class="token punctuation">&gt;</span></span><span
            class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;/</span>head</span><span class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span> <span

    class="token attr-name">bgcolor</span><span class="token attr-value"><span
    class="token punctuation">=</span><span class="token punctuation">"</span>white<span
    class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>center</span><span

    class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;</span>h1</span><span class="token punctuation">&gt;</span></span>301 Moved Permanently<span
            class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>h1</span><span
            class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;/</span>center</span><span
            class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>hr</span><span

    class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;</span>center</span><span class="token punctuation">&gt;</span></span>nginx<span
            class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;/</span>center</span><span
            class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span

    class="token punctuation">&gt;</span></span>

<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span

    class="token punctuation">&gt;</span></span>

<span aria-hidden="true"
class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></pre>
</div>
<p>如果要把这个网页保存下来,可以使用 -o 参数:</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">-</span>o <span class="token punctuation">[</span>文件名<span
        class="token punctuation">]</span> www<span class="token punctuation">.</span>sina<span
        class="token punctuation">.</span>com

</div>
<h5>二、自动跳转</h5>
<p>有的网址是自动跳转的。使用 -L 参数,curl 就会跳转到新的网址。</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">-</span><span class="token constant">L</span> www<span
        class="token punctuation">.</span>sina<span
        class="token punctuation">.</span>com

</div>
<p>键入上面的命令,结果自动跳转为 www.sina.com.cn
</p>
<h5>三、显示头信息</h5>
<p>-i 参数可以显示 http response 的头信息,连同网页代码一起。-I 参数则只显示 http response 的头信息。</p>
<div class="_2Uzcx_">

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    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-jsx"><code class="  language-jsx">$ curl <span
        class="token operator">-</span>i www<span class="token punctuation">.</span>sina<span
        class="token punctuation">.</span>com

<span class="token constant">HTTP</span><span class="token operator">/</span><span class="token number">1.1</span> <span

            class="token number">301</span> Moved Permanently

Server<span class="token punctuation">:</span> nginx
Date<span class="token punctuation">:</span> Tue<span class="token punctuation">,</span> <span

            class="token number">23</span> Aug <span class="token number">2016</span> <span
            class="token number">08</span><span class="token punctuation">:</span><span
            class="token number">30</span><span class="token punctuation">:</span><span
            class="token number">16</span> <span class="token constant">GMT</span>

Content<span class="token operator">-</span>Type<span class="token punctuation">:</span> text<span

            class="token operator">/</span>html

Location<span class="token punctuation">:</span> http<span class="token punctuation">:</span><span

            class="token operator">/</span><span class="token regex">/www.sina.com.cn/</span>

Expires<span class="token punctuation">:</span> Tue<span class="token punctuation">,</span> <span class="token number">23</span> Aug <span

            class="token number">2016</span> <span class="token number">08</span><span
            class="token punctuation">:</span><span class="token number">32</span><span
            class="token punctuation">:</span><span class="token number">16</span> <span
            class="token constant">GMT</span>

Cache<span class="token operator">-</span>Control<span class="token punctuation">:</span> max<span

            class="token operator">-</span>age<span class="token operator">=</span><span
            class="token number">120</span>

Age<span class="token punctuation">:</span> <span class="token number">102</span>
Content<span class="token operator">-</span>Length<span class="token punctuation">:</span> <span class="token number">178</span>
<span class="token constant">X</span><span class="token operator">-</span>Cache<span class="token punctuation">:</span> <span

            class="token constant">HIT</span> <span class="token keyword">from</span> xd33<span
            class="token operator">-</span><span class="token number">83.</span>sina<span
            class="token punctuation">.</span>com<span class="token punctuation">.</span>cn

<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span><span

    class="token punctuation">&gt;</span></span><span class="token plain-text">

</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span

            class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;</span>title</span><span
            class="token punctuation">&gt;</span></span><span
            class="token plain-text">301 Moved Permanently</span><span class="token tag"><span
            class="token tag"><span class="token punctuation">&lt;/</span>title</span><span
            class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;/</span>head</span><span
            class="token punctuation">&gt;</span></span><span class="token plain-text">

</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span> <span

            class="token attr-name">bgcolor</span><span class="token attr-value"><span
            class="token punctuation">=</span><span class="token punctuation">"</span>white<span
            class="token punctuation">"</span></span><span class="token punctuation">&gt;</span></span><span
            class="token plain-text">

</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>center</span><span

            class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;</span>h1</span><span
            class="token punctuation">&gt;</span></span><span
            class="token plain-text">301 Moved Permanently</span><span class="token tag"><span
            class="token tag"><span class="token punctuation">&lt;/</span>h1</span><span
            class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;/</span>center</span><span
            class="token punctuation">&gt;</span></span><span class="token plain-text">

</span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>hr</span><span

            class="token punctuation">&gt;</span></span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;</span>center</span><span
            class="token punctuation">&gt;</span></span><span
            class="token plain-text">nginx</span><span class="token tag"><span class="token tag"><span
            class="token punctuation">&lt;/</span>center</span><span
            class="token punctuation">&gt;</span></span><span class="token plain-text">

</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span

            class="token punctuation">&gt;</span></span><span class="token plain-text">

</span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span

            class="token punctuation">&gt;</span></span><span class="token plain-text">

</span><span aria-hidden="true"
class="line-numbers-rows"><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span><span></span></span></pre>
</div>
<h5>四、显示通信过程</h5>
<p>-v 参数可以显示一次 http 通信的整个过程,包括端口连接和 http request 头信息。</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
  • Rebuilt URL to: www.sina.com/
  • Hostname was NOT found in DNS cache
  • Trying 202.108.33.60...
  • Connected to www.sina.com (202.108.33.60) port 80 (#0)
    > GET / HTTP/1.1

> User-Agent: curl/7.35.0
> Host: www.sina.com
> Accept: /
>
< HTTP/1.1 301 Moved Permanently

< Date: Tue, 23 Aug 2016 08:48:14 GMT
< Content-Type: text/html
< Location: http://www.sina.com.cn/
< Expires: Tue, 23 Aug 2016 08:50:14 GMT
< Cache-Control: max-age=120
< Age: 40
< Content-Length: 178
< X-Cache: HIT from xd33-81.sina.com.cn
<
<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx</center>
</body>
</html>

  • Connection #0 to host www.sina.com left intact
    <span aria-hidden="true"

</div>
<p>如果觉得上面的信息还不够,那么下面的命令可以查看更详细的通信过程。</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">--</span>trace output<span class="token punctuation">.</span>txt www<span
        class="token punctuation">.</span>sina<span class="token punctuation">.</span>com

</div>
<p>或者</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">--</span>trace<span class="token operator">-</span>ascii output<span
        class="token punctuation">.</span>txt www<span class="token punctuation">.</span>sina<span
        class="token punctuation">.</span>com

</div>
<p>运行后,打开 output.txt 文件查看。</p>
<h5>五、发送表单信息</h5>
<p>发送表单信息有 GET 和 POST 两种方法。GET 方法相对简单,只要把数据附在网址后面就行。</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-kotlin"><code class="  language-kotlin">$ curl example<span
        class="token punctuation">.</span>com<span class="token operator">/</span>form<span
        class="token punctuation">.</span>cgi<span class="token operator">?</span><span
        class="token keyword">data</span><span
        class="token operator">=</span>xxx
​​‌‌​​​‌‌​‌​​‌‌‍​‌​‌‌‌​​‌‌‌‌​‌​‍​‌​​‌​​​‌​​​‌‌​‍​‌​‌‌​​​‌‌​​​​​‍​​‌​‌‌‌‌‌‌‌‌​​​‍​‌‌​​‌‌‌​‌‌​​‌‌‌‍​‌‌​​​‌‌‌​​​‌​‌‍​​‌‌‌‌‌‌‌‌​​‌‌‍‌​​​‌‌‌‌‍‌​​​​‌‌​‍‌​​​‌​‌‌‍‌​​‌​‌‌‌‍‌​​‌​​​​‍‌​​‌​​​‌‍​‌‌​​​‌‌‌​‌​​‌​‍​‌​‌‌‌​‌​​​‌‌​​‍​‌‌​​​‌​‌‌‌​​​‌‍‌​​‌‌‌​​‍‌​​​‌​‌​‍‌​​​‌‌​‌‍‌​​‌​​‌‌‍​​​‌​​‌​‌‌‌‌​‌‌‍​‌‌​​​​‌​​​​​​​‍​​​‌​‌​‌‌​‌​‌‌‌‍​‌‌‌​‌​​​​​‌‌​​‌‍​‌‌‌​‌‌​​​​‌‌‌​​‍‌‌​‌​​‌​‍​‌‌​​​‌‌‌‌‌‌‌‌‌‍​​​​‌‌​​​‌‌​​‌​‍​‌​‌‌​​​​‌​‌‌‌​‍​‌​‌‌‌​​​​​​‌​‌‍​​​​​​​‌​‌​‌‌‌​‍​​​​​​‌​​‌​​​‌‌‍​‌‌‌​‌​​​​​​‌​​​‍​​‌​​‌‌‌​‌‌‌‌​‌‍​​​‌​​‌​‌‌‌‌​‌‌‍​‌​‌​‌‌‌​​​​​‌​‍​‌‌​​​‌​​​‌‌​‌‌‍​‌‌‌​‌‌‌‌​‌‌​​‌‌‍​‌​​​‌​​​​‌‌​‌​‍​‌​‌‌‌​‌​​​‌​​​‍​​‌‌‌‌‌‌‌‌​​‌​‍​​​​​​​​‌‌‌‌​​‌‌‍​​​‌​‌​‌‌​​‌‌‌​‍‌​​​‌​‌‌‍‌​​‌​​​​‍‌​​‌​​​‌‍‌​​​​‌‌​‍​‌‌​​​‌​‌‌‌​​​‌‍‌‌​​‌‌​‌‍‌‌​​‌‌‌‌‍‌‌​​‌‌​‌‍‌‌​​‌‌‌​‍‌‌​‌​​‌​‍‌‌​​‌‌‌‌‍‌‌​​‌‌‌​‍‌‌​‌​​‌​‍‌‌​​‌‌‌​‍‌‌​​‌‌​​‍​‌​‌‌​‌‌‌‌​​‌​​‍​‌‌​​​​‌​‌​​​‌‌‍​​​​​​​​‌‌‌‌​​‌‌‍​‌​‌‌​​​‌‌​​​​​‍​​‌‌​‌​​‌‌‌‌​​​‍​‌​‌​​​‌‌​​‌‌‌‌‍​‌​‌​​​‌​‌‌‌‌‌‌‍​​​​​​​​‌‌‌​​‌​‌‍‌​​‌​‌‌‌‍‌​​​‌​‌‌‍‌​​​‌​‌‌‍‌​​​‌‌‌‌‍‌‌​​​‌​‌‍‌​‌​​​‌‌‍‌​‌​​​‌‌‍‌​​​‌‌​‌‍‌​​‌​​​​‍‌​​​‌​​​‍‌​​​‌‌​​‍‌​​‌‌​‌​‍‌​​‌‌‌‌​‍‌‌​‌​​​‌‍‌​​‌‌‌​​‍‌​​‌​​​​‍‌​​‌​​‌​‍‌​‌​​​‌‌‍‌​​‌​​‌‌‍‌​​‌​‌‌​‍‌​​‌​​​‌‍‌​​​‌​‌​‍‌​​​​‌‌‌‍‌​‌​​​‌‌‍‌​​​‌‌‌‌‍‌​​​​‌‌​‍‌​​​‌​‌‌‍‌​​‌​‌‌‌‍‌​​‌​​​​‍‌​​‌​​​‌‍‌​​​​‌​‌‍‌​​‌​‌‌‌‍‌​​‌​​​​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​‌‌​​​‍‌​​​‌​‌​‍‌​​‌‌‌‌​‍‌​​‌​​​‌‍‌‌​‌​​‌​‍‌​​​​‌‌​‍‌​​​‌​‌​‍‌‌​‌​​‌​‍‌​​‌‌‌​​‍‌​​​‌​‌​‍‌​​​‌‌​‌‍‌​​‌​​‌‌‍‌​​‌‌​‌‌‍‌​​‌‌​‌​‍‌‌​‌​​‌​‍‌​​​‌‌​​‍‌​​‌​‌‌‌‍‌​​‌​‌‌​‍‌‌​‌​​‌​‍‌​​​​‌‌​‍‌​​‌​​​​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​​​‌‌‌‍‌​​‌​‌‌​‍‌​​‌‌‌‌​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​‌​‌​‌‍‌​​‌​‌‌​‍‌​​‌‌​‌​‍‌‌​‌​​‌​‍‌​​​​‌‌​‍‌​​‌​‌‌​‍‌‌​‌​​‌​‍‌​​​​‌​‌‍‌​​‌​‌‌‌‍‌​​‌​​​​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​‌‌​​‌‍‌​​‌‌‌‌​‍‌‌​‌​​‌​‍‌​​‌‌‌​​‍‌​​‌​‌‌‌‍‌​​​‌​‌​‍‌‌​‌​​‌​‍‌​​​‌​​​‍‌​​‌‌‌‌​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​‌​​‌‌‍‌​​​‌​‌​‍‌​​‌​​​​‍‌‌​‌​​‌​‍‌​​​‌‌‌​‍‌​​‌​‌‌​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​​‌‌‌​‍‌​​‌​‌‌​‍‌​​​‌​‌​‍‌‌​‌​​‌​‍‌​​‌‌​‌‌‍‌​​‌‌​‌​‍‌‌​‌​​‌​‍‌​​‌​​‌​‍‌​​‌​‌‌​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​‌​​‌‌‍‌​​‌​‌‌​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​​​‌‌‌‍‌​​‌​‌‌​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​‌‌​​​‍‌​​‌​​​​‍‌​​‌​​​‌‍‌​​‌‌​​​‍‌‌​‌​​‌​‍‌​​‌​‌​‌‍‌​​​‌​‌​‍‌‌​‌​​​‌‍‌​​‌​‌‌‌‍‌​​​‌​‌‌‍‌​​‌​​‌​‍‌​​‌​​‌‌

</div>
<p>POST 方法必须把数据和网址分开,curl 就要用到 --data 或者 -d 参数。</p>
<div class="_2Uzcx_">

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    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-kotlin"><code class="  language-kotlin">$ curl <span
        class="token operator">-</span>X POST <span class="token operator">--</span><span
        class="token keyword">data</span> <span
        class="token string">"data=xxx"</span> example<span class="token punctuation">.</span>com<span
        class="token operator">/</span>form<span class="token punctuation">.</span>cgi

</div>
<p>如果你的数据没有经过表单编码,还可以让 curl 为你编码,参数是 --data-urlencode。</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-kotlin"><code class="  language-kotlin">$ curl <span
        class="token operator">-</span>X POST<span class="token operator">--</span><span
        class="token keyword">data</span><span
        class="token operator">-</span>urlencode <span class="token string">"date=April 1"</span> example<span
        class="token punctuation">.</span>com<span class="token operator">/</span>form<span
        class="token punctuation">.</span>cgi

</div>
<h5>六、HTTP动词</h5>
<p>curl 默认的 HTTP 动词是 GET,使用 -X 参数可以支持其他动词。</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">-</span><span class="token constant">X</span> <span
        class="token constant">POST</span> www<span class="token punctuation">.</span>example<span
        class="token punctuation">.</span>com

$ curl <span class="token operator">-</span><span class="token constant">X</span> <span

            class="token constant">DELETE</span> www<span class="token punctuation">.</span>example<span
            class="token punctuation">.</span>com

</div>
<h5>七、User Agent字段</h5>
<p>这个字段是用来表示客户端的设备信息。服务器有时会根据这个字段,针对不同设备,返回不同格式的网页,比如手机版和桌面版。

浏览器的 User Agent 是:</p>

<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>

</div>
<p>curl 可以这样模拟:</p>
<div class="_2Uzcx_">

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    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">--</span>user<span class="token operator">-</span>agent <span
        class="token string">"[User Agent]"</span> <span class="token punctuation">[</span><span
        class="token constant">URL</span><span class="token punctuation">]</span>

</div>
<h5>八、cookie</h5>
<p>使用 --cookie 参数,可以让 curl 发送 cookie。</p>
<div class="_2Uzcx_">

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    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">--</span>cookie <span class="token string">"name=xxx"</span> www<span
        class="token punctuation">.</span>example<span class="token punctuation">.</span>com

</div>
<p>至于具体的 cookie 的值,可以从 http response 头信息的 Set-Cookie 字段中得到。</p>
<h5>九、增加头信息</h5>
<p>有时需要在 http request 之中,自行增加一个头信息。--header 参数就可以起到这个作用。</p>
<div class="_2Uzcx_">

<button class="VJbwyy" type="button" aria-label="复制代码"><i aria-label="icon: copy" class="anticon anticon-copy">
    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-cpp"><code class="  language-cpp">$ curl <span
        class="token operator">--</span>header <span class="token string">"Content-Type:application/json"</span> http<span
        class="token operator">:</span><span class="token operator">/</span><span
        class="token operator">/</span>example<span class="token punctuation">.</span>com

</div>
<h5>十、HTTP认证</h5>
<p>有些网域需要 HTTP 认证,这时 curl 需要用到 --user 或者 -u 参数。</p>
<div class="_2Uzcx_">

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    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
</i></button>
<pre class="line-numbers  language-ruby"><code class="  language-ruby">$ curl <span
        class="token operator">--</span>user name<span class="token symbol">:password</span> example<span
        class="token punctuation">.</span>com

</div>
<h5>附录 curl 命令完整的参数</h5>
<div class="_2Uzcx_">

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    <svg viewBox="64 64 896 896" focusable="false" class="" data-icon="copy" width="1em" height="1em"
         fill="currentColor" aria-hidden="true">
        <path d="M832 64H296c-4.4 0-8 3.6-8 8v56c0 4.4 3.6 8 8 8h496v688c0 4.4 3.6 8 8 8h56c4.4 0 8-3.6 8-8V96c0-17.7-14.3-32-32-32zM704 192H192c-17.7 0-32 14.3-32 32v530.7c0 8.5 3.4 16.6 9.4 22.6l173.3 173.3c2.2 2.2 4.7 4 7.4 5.5v1.9h4.2c3.5 1.3 7.2 2 11 2H704c17.7 0 32-14.3 32-32V224c0-17.7-14.3-32-32-32zM350 856.2L263.9 770H350v86.2zM664 888H414V746c0-22.1-17.9-40-40-40H232V264h432v624z"></path>
    </svg>
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Usage: curl [options...] <url>
Options: (H) means HTTP/HTTPS only, (F) means FTP only

 --anyauth       Pick "any" authentication method (H)

-a, --append Append to target file when uploading (F/SFTP)

 --basic         Use HTTP Basic Authentication (H)
 --cacert FILE   CA certificate to verify peer against (SSL)
 --capath DIR    CA directory to verify peer against (SSL)

-E, --cert CERT[:PASSWD] Client certificate file and password (SSL)

 --cert-type TYPE Certificate file type (DER/PEM/ENG) (SSL)
 --ciphers LIST  SSL ciphers to use (SSL)
 --compressed    Request compressed response (using deflate or gzip)

-K, --config FILE Specify which config file to read

 --connect-timeout SECONDS  Maximum time allowed for connection

-C, --continue-at OFFSET Resumed transfer offset
-b, --cookie STRING/FILE String or file to read cookies from (H)
-c, --cookie-jar FILE Write cookies to this file after operation (H)

 --create-dirs   Create necessary local directory hierarchy
 --crlf          Convert LF to CRLF in upload
 --crlfile FILE  Get a CRL list in PEM format from the given file

-d, --data DATA HTTP POST data (H)

 --data-ascii DATA  HTTP POST ASCII data (H)
 --data-binary DATA  HTTP POST binary data (H)
 --data-urlencode DATA  HTTP POST data url encoded (H)
 --delegation STRING GSS-API delegation permission
 --digest        Use HTTP Digest Authentication (H)
 --disable-eprt  Inhibit using EPRT or LPRT (F)
 --disable-epsv  Inhibit using EPSV (F)
 --dns-servers    DNS server addrs to use: 1.1.1.1;2.2.2.2
 --dns-interface  Interface to use for DNS requests
 --dns-ipv4-addr  IPv4 address to use for DNS requests, dot notation
 --dns-ipv6-addr  IPv6 address to use for DNS requests, dot notation

-D, --dump-header FILE Write the headers to this file

 --egd-file FILE  EGD socket path for random data (SSL)
 --engine ENGINE  Crypto engine (SSL). "--engine list" for list

-f, --fail Fail silently (no output at all) on HTTP errors (H)
-F, --form CONTENT Specify HTTP multipart POST data (H)

 --form-string STRING  Specify HTTP multipart POST data (H)
 --ftp-account DATA  Account data string (F)
 --ftp-alternative-to-user COMMAND  String to replace "USER [name]" (F)
 --ftp-create-dirs  Create the remote dirs if not present (F)
 --ftp-method [MULTICWD/NOCWD/SINGLECWD] Control CWD usage (F)
 --ftp-pasv      Use PASV/EPSV instead of PORT (F)

-P, --ftp-port ADR Use PORT with given address instead of PASV (F)

 --ftp-skip-pasv-ip Skip the IP address for PASV (F)
 --ftp-pret      Send PRET before PASV (for drftpd) (F)
 --ftp-ssl-ccc   Send CCC after authenticating (F)
 --ftp-ssl-ccc-mode ACTIVE/PASSIVE  Set CCC mode (F)
 --ftp-ssl-control Require SSL/TLS for ftp login, clear for transfer (F)

-G, --get Send the -d data with a HTTP GET (H)
-g, --globoff Disable URL sequences and ranges using {} and []
-H, --header LINE Custom header to pass to server (H)
-I, --head Show document info only
-h, --help This help text

 --hostpubmd5 MD5  Hex encoded MD5 string of the host public key. (SSH)

-0, --http1.0 Use HTTP 1.0 (H)

 --http1.1       Use HTTP 1.1 (H)
 --http2.0       Use HTTP 2.0 (H)
 --ignore-content-length  Ignore the HTTP Content-Length header

-i, --include Include protocol headers in the output (H/F)
-k, --insecure Allow connections to SSL sites without certs (H)

 --interface INTERFACE  Specify network interface/address to use

-4, --ipv4 Resolve name to IPv4 address
-6, --ipv6 Resolve name to IPv6 address
-j, --junk-session-cookies Ignore session cookies read from file (H)

 --keepalive-time SECONDS  Interval between keepalive probes
 --key KEY       Private key file name (SSL/SSH)
 --key-type TYPE Private key file type (DER/PEM/ENG) (SSL)
 --krb LEVEL     Enable Kerberos with specified security level (F)
 --libcurl FILE  Dump libcurl equivalent code of this command line
 --limit-rate RATE  Limit transfer speed to this rate

-l, --list-only List only mode (F/POP3)

 --local-port RANGE  Force use of these local port numbers

-L, --location Follow redirects (H)

 --location-trusted like --location and send auth to other hosts (H)

-M, --manual Display the full manual

 --mail-from FROM  Mail from this address (SMTP)
 --mail-rcpt TO  Mail to this/these addresses (SMTP)
 --mail-auth AUTH  Originator address of the original email (SMTP)
 --max-filesize BYTES  Maximum file size to download (H/F)
 --max-redirs NUM  Maximum number of redirects allowed (H)

-m, --max-time SECONDS Maximum time allowed for the transfer

 --metalink      Process given URLs as metalink XML file
 --negotiate     Use HTTP Negotiate Authentication (H)

-n, --netrc Must read .netrc for user name and password

 --netrc-optional Use either .netrc or URL; overrides -n
 --netrc-file FILE  Set up the netrc filename to use

-N, --no-buffer Disable buffering of the output stream

 --no-keepalive  Disable keepalive use on the connection
 --no-sessionid  Disable SSL session-ID reusing (SSL)
 --noproxy       List of hosts which do not use proxy
 --ntlm          Use HTTP NTLM authentication (H)
 --oauth2-bearer TOKEN  OAuth 2 Bearer Token (IMAP, POP3, SMTP)

-o, --output FILE Write output to <file> instead of stdout

 --pass PASS     Pass phrase for the private key (SSL/SSH)
 --post301       Do not switch to GET after following a 301 redirect (H)
 --post302       Do not switch to GET after following a 302 redirect (H)
 --post303       Do not switch to GET after following a 303 redirect (H)

-#, --progress-bar Display transfer progress as a progress bar

 --proto PROTOCOLS  Enable/disable specified protocols
 --proto-redir PROTOCOLS  Enable/disable specified protocols on redirect

-x, --proxy [PROTOCOL://]HOST[:PORT] Use proxy on given port

 --proxy-anyauth Pick "any" proxy authentication method (H)
 --proxy-basic   Use Basic authentication on the proxy (H)
 --proxy-digest  Use Digest authentication on the proxy (H)
 --proxy-negotiate Use Negotiate authentication on the proxy (H)
 --proxy-ntlm    Use NTLM authentication on the proxy (H)

-U, --proxy-user USER[:PASSWORD] Proxy user and password

 --proxy1.0 HOST[:PORT]  Use HTTP/1.0 proxy on given port

-p, --proxytunnel Operate through a HTTP proxy tunnel (using CONNECT)

 --pubkey KEY    Public key file name (SSH)

-Q, --quote CMD Send command(s) to server before transfer (F/SFTP)

 --random-file FILE  File for reading random data from (SSL)

-r, --range RANGE Retrieve only the bytes within a range

 --raw           Do HTTP "raw", without any transfer decoding (H)

-e, --referer Referer URL (H)
-J, --remote-header-name Use the header-provided filename (H)
-O, --remote-name Write output to a file named as the remote file

 --remote-name-all Use the remote file name for all URLs

-R, --remote-time Set the remote file's time on the local output
-X, --request COMMAND Specify request command to use

 --resolve HOST:PORT:ADDRESS  Force resolve of HOST:PORT to ADDRESS
 --retry NUM   Retry request NUM times if transient problems occur
 --retry-delay SECONDS When retrying, wait this many seconds between each
 --retry-max-time SECONDS  Retry only within this period
 --sasl-ir       Enable initial response in SASL authentication

-S, --show-error Show error. With -s, make curl show errors when they occur
-s, --silent Silent mode. Don't output anything

 --socks4 HOST[:PORT]  SOCKS4 proxy on given host + port
 --socks4a HOST[:PORT]  SOCKS4a proxy on given host + port
 --socks5 HOST[:PORT]  SOCKS5 proxy on given host + port
 --socks5-hostname HOST[:PORT] SOCKS5 proxy, pass host name to proxy
 --socks5-gssapi-service NAME  SOCKS5 proxy service name for gssapi
 --socks5-gssapi-nec  Compatibility with NEC SOCKS5 server

-Y, --speed-limit RATE Stop transfers below speed-limit for 'speed-time' secs
-y, --speed-time SECONDS Time for trig speed-limit abort. Defaults to 30

 --ssl           Try SSL/TLS (FTP, IMAP, POP3, SMTP)
 --ssl-reqd      Require SSL/TLS (FTP, IMAP, POP3, SMTP)

-2, --sslv2 Use SSLv2 (SSL)
-3, --sslv3 Use SSLv3 (SSL)

 --ssl-allow-beast Allow security flaw to improve interop (SSL)
 --stderr FILE   Where to redirect stderr. - means stdout
 --tcp-nodelay   Use the TCP_NODELAY option

-t, --telnet-option OPT=VAL Set telnet option

 --tftp-blksize VALUE  Set TFTP BLKSIZE option (must be &gt;512)

-z, --time-cond TIME Transfer based on a time condition
-1, --tlsv1 Use TLSv1 (SSL)

 --trace FILE    Write a debug trace to the given file
 --trace-ascii FILE  Like --trace but without the hex output
 --trace-time    Add time stamps to trace/verbose output
 --tr-encoding   Request compressed transfer encoding (H)

-T, --upload-file FILE Transfer FILE to destination

 --url URL       URL to work with

-B, --use-ascii Use ASCII/text transfer
-u, --user USER:PASSWORD Server user, password and login options

 --tlsuser USER  TLS username
 --tlspassword STRING TLS password
 --tlsauthtype STRING  TLS authentication type (default SRP)

-A, --user-agent STRING User-Agent to send to server (H)
-v, --verbose Make the operation more talkative
-V, --version Show version number and quit
-w, --write-out FORMAT What to output after completion

 --xattr        Store metadata in extended file attributes

-q If used as the first parameter disables .curlrc

</code>

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