extract URLs from IRClogs [SOLVED]

alex.blackbit · Advocate Joined: 26 Jul 2005 Posts: 2288

Hi,

I use irssi for IRC and log the channels that I am in.
There are a few channels that I don't find particularly interesting as a whole, but only the posted URLs.
So what I would like to do is run tailf on the log file and pipe that to sed or awk to get only lines that contain URLs and of those lines, extract the URL itself, discard the rest of the line.
I have no clue about sed or awk beyond 's/foo/goo/' and '{ print $3 }'.
Would somebody please give me a hand?

katfish · Tux's lil' helper Joined: 14 Nov 2011 Posts: 84

Hi, I'm a beginner in scripting.
However, wouldn't a simple "echo xxx | grep http" do it perfectly?

alex.blackbit · Advocate Joined: 26 Jul 2005 Posts: 2288

katfish: that solved the first part, but not the second.
The result are only lines that contain URLs.
What I want are only the URLS, nothing leading, nothing trailing.
That's why I suggested sed, awk, or even perl for that task.
Thanks for your reply anyway.

tomk · Posted: Fri Feb 10, 2012 1:28 pm Post subject:

Something like this:

alex.blackbit · Advocate Joined: 26 Jul 2005 Posts: 2288

Uh, thanks for your answer, tomk.