Get Redirect URL with cURL
URL redirects can be glorious or annoying depending on which side of them you are on and which side you want to be on. Redirects are helpful for vanity URLs (useful in advertising) but sometimes they're annoying in that they could potentially break your code if you encounter a redirect you weren't anticipating.
The useful and amazing cURL command line utility allows you to fetch an address and return its final destination URL:
# "/css" doesn't exist but WordPress tries to find the closest match
# and then redirects to it ("/css-animation-callback")
curl -Ls -w %{url_effective} -o /dev/null https://davidwalsh.name/css
# Outputs: https://davidwalsh.name/css-animation-callback
The url_effective variable is what we're after. The L directive tells cURL to follow redirects, the s directive tells cURL to be silent (i.e. not output the page contents). You provide the URL, cURL follows it to its endpoint -- easy!
![Send Text Messages with PHP]()
Kids these days, I tell ya. All they care about is the technology. The video games. The bottled water. Oh, and the texting, always the texting. Back in my day, all we had was...OK, I had all of these things too. But I still don't get...
![5 Awesome New Mozilla Technologies You’ve Never Heard Of]()
My trip to Mozilla Summit 2013 was incredible. I've spent so much time focusing on my project that I had lost sight of all of the great work Mozillians were putting out. MozSummit provided the perfect reminder of how brilliant my colleagues are and how much...
![MooTools OpenLinks Class – Updated]()
A long time back I coded a MooTools class called OpenLinks. The class is quite useful but the code...sucks. I've gotten much better with MooTools over the past years so I thought I'd go back and update the class to be better, faster...
![Telephone Link Protocol]()
We've always been able to create links with protocols other than the usual HTTP, like mailto, skype, irc ,and more; they're an excellent convenience to visitors. With mobile phone browsers having become infinitely more usable, we can now extend that convenience to phone numbers:
The tel...
Follow a URL using JavaScript: https://www.npmjs.com/package/linkfollower