How to extract domain name from url?

Question

How do I extract the domain name from a url using bash? like: http://example.com/ to example.com must work for any tld, not just .com

Answer 1

there is so little info on how you get those urls...please show more info next time. are there parameters in the url etc etc... Meanwhile, just simple string manipulation for your sample url

eg

$ s="http://example.com/index.php"
$ echo ${s/%/*}  #get rid of last "/" onwards
http://example.com
$ s=${s/%\//}  
$ echo ${s/#http:\/\//} # get rid of http://
example.com

other ways, using sed(GNU)

$ echo $s | sed 's/http:\/\///;s|\/.*||'
example.com

use awk

$ echo $s| awk '{gsub("http://|/.*","")}1'
example.com