Follow Redirects with cURL

By  on  

I love playing around with cURL. There's something about loading websites via command line that makes me feel like some type of smug hacker, just like tweeting from command line does.

I recently cURL'd the Google homepage and saw the following:

curl google.com

#<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
#<TITLE>301 Moved</TITLE></HEAD><BODY>
#<H1>301 Moved</H1>
#The document has moved
#<A HREF="http://www.google.com/">here</A>.
#</BODY></HTML>

I found it weird that Google does the initial redirect but I still want to get the source of the Google homepage with cURL, as with any site that may do a redirect without you noticing. Luckily it's just a single flag:

curl -L google.com

#<!doctype html><html itemscope="" itemtype="http://schema.org/WebPage" lang="en">...

The -L flag instructs cURL to follow any redirect so that you reach the eventual endpoint. Those tiny redirects are just noise anyways, right?

Recent Features

  • By
    6 Things You Didn&#8217;t Know About Firefox OS

    Firefox OS is all over the tech news and for good reason:  Mozilla's finally given web developers the platform that they need to create apps the way they've been creating them for years -- with CSS, HTML, and JavaScript.  Firefox OS has been rapidly improving...

  • By
    CSS vs. JS Animation: Which is Faster?

    How is it possible that JavaScript-based animation has secretly always been as fast — or faster — than CSS transitions? And, how is it possible that Adobe and Google consistently release media-rich mobile sites that rival the performance of native apps? This article serves as a point-by-point...

Incredible Demos

  • By
    WebKit-Specific Style:  -webkit-appearance

    I was recently scoping out the horrid source code of the Google homepage when I noticed the "Google Search" and "I'm Feeling Lucky" buttons had a style definition I hadn't seen before:  -webkit-appearance.  The value assigned to the style was "push-button."  They are buttons so that...

  • By
    Smooth Scrolling with MooTools Fx.SmoothScroll

    I get quite a few support requests for my previous MooTools SmoothScroll article and the issue usually boils down to the fact that SmoothScroll has become Fx.SmoothScroll. Here's a simple usage of Fx.SmoothScroll. The HTML The only HTML requirement for Fx.SmoothScroll is that all named...

Discussion

  1. Dan

    Is there a way to do this outside of the command line in PHP?

    • H.Gerber

      The curl-lib in PHP offers an option for that:

      $handle = curl_init();
      ...
      curl_setopt($handle, CURLOPT_FOLLOWLOCATION, true);
      ...
      curl_exec($handle);
      ...
      
    • Jonny

      And if the url is using/forcing https, set this option before executing the curl:

      curl_setopt($handle, CURLOPT_SSL_VERIFYPEER, false);
      
    • Robert Munro

      Please don’t do that, unless you really don’t care about the content of the download. It essentially says “Ignore the SSL errors if it’s broken – trust the same as you would an unencrypted URL.”

      The data will still be encrypted, but could be coming from a man-in-the-middle, not from where you thing it’s coming from.

  2. The implementation of curl in PHP has an option for that.

    See the following link:
    http://stackoverflow.com/questions/3519939/make-curl-follow-redirects

  3. A

    if you liked curl, you’ll love lynx..

  4. I hit an issue with not following redirects myself, but this was a download from a GitHub release download that was redirecting to a S3 bucket. Broke a CLI out in the wild…

    In this case, I’m not sure it’s noise (to get at your closing question). I was intentionally not following redirects, as one should not expect this to be happening with GitHub downloads…

    I have a support ticket in to see what’s up with this very recent change. Maybe it was a DevOops?

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!