Actually it does not matter that there are \w\.\w... sequences as . sorts before \w you get the desired result. The http:// is also immaterial provided all entries either have (or don't have it). cmp sorting does not stop at the first non word - it simply sorts in ASCII order. 

print "$_\n" for sort qw (  http://. 
                            http://www.google.com 
                            http://www.google.co.uk 
                            http://au.google.com 
                            http://au.goo.com 
                            http://au.goop.com  
                         );

__DATA__
http://.
http://au.goo.com
http://au.google.com
http://au.goop.com
http://www.google.co.uk
http://www.google.com

[download]

This looks appropriately sorted to me. The IP code will get you the domain (or IP) in $1 regardless so you can easily modify it, but as this shows you don't really need to unless you want to trim off the ftp:// http:// https:// part and thus lump these in one group. The only other modification you can do to the domain name is chop the www. off (trying to guess other subdomains is a hopeless task) Otherwise the default cmp should work fine. Perhaps you could post an example of where it is not?

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

In reply to Re: Re: Re: Sorting URLs on domain/host: sortkeys generation by tachyon
in thread Sorting URLs on domain/host: sortkeys generation by parv

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