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Functions

Match a URL

Terminal - Match a URL
egrep 'https?://([[:alpha:]]([-[:alnum:]]+[[:alnum:]])*\.)+[[:alpha:]]{2,3}(:\d+)?(/([-\w/_\.]*(\?\S+)?)?)?'
2009-11-28 15:41:42
User: putnamhill
Functions: egrep
5
Match a URL

For the record: I didn't build this. Just shared what I found that worked. Apologies to the original author!

I decided I should fix the case where http://example.com is not matched for the next time I need this. So I read rfc1035 and formalized the host name regex.

If anyone finds any more holes, please comment.

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives
echo "(Something like http://foo.com/blah_blah)" | grep -oP "\b(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|([^[:punct:]\s]|/)))"
cho "(Something like http://foo.com/blah_blah)" | awk '{for(i=1;i<=NF;i++){if($i~/^(http|ftp):\/\//)print $i}}'
2009-11-28 03:31:41
Functions: awk
-1

don't have to be that complicated

Know a better way?

If you can do better, submit your command here.

What others think

only matches domains starting with www but still nice

Comment by tcfusion 262 weeks and 5 days ago

It should now match http://example.com if you like to give it another try. Good catch BTW!

Comment by putnamhill 261 weeks and 6 days ago

http://foo.com./blah_blah should match too. Mind the last dot in the domain so I added \.? there too + it does not work for .aero, .arpa, .asia, .coop, .info, .jobs, .mobi, .museum, .name and .travel so I extended from 3 to 6

egrep 'https?://([[:alpha:]]([-[:alnum:]]+[[:alnum:]])*\.)+[[:alpha:]]{2,6}(:\d+)?\.?(/([-\w/_\.]*(\?\S+)?)?)?'

Cheers

Comment by bw 259 weeks and 2 days ago

Your point of view

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