[ILUG] [OT puzzle] Grep regex Answers

[Declan Moriarty]

On Tue, 2006-06-27 at 13:28 +0100, Proinnsias Breathnach wrote:

> > > strings index.dat | grep http | less ?
> > > 
> > > Maybe, just maybe ?
> > 
We were doing very well here...

> > it caught the http all right. No file:// ftp:// or whatever else. That
> > might be enough though.
> 
> easy to fix: 
> 	strings index.dat | grep -e '[http|ftp|file]' | less
This caught the desired stuff along with a huge pile of unwanted gruff
as if the regex was too all-encompassing.  I had lines like
f7,ea,0
as well. Adding -o showed it was triggering on single letters :-/.

Kevin's offering 

>     strings index.dat | grep -e '\(http|ftp|file\)' | less

Was a little to restrictive - it caught nothing :-(.

In fact, I fiddled away with brackets and escapes to no avail.
Based on this, my feeble attempt

  strings index.dat | grep -e 'http' -e 'ftp' -e 'file' | less

Actually more or less did the trick.  I only ever got semi functional
with Perl regexes, and these have to be Posix or something

To trim the crud, Proinnsias offered 
> Probably easily solved by adding a :
> 	| sed -e 's/ .*$//' 
> before the | less 

This was excellent - it provided the correct search term. It didn't
work, mind you. I got a list of lines saying 
Visited:
and nothing more. So the correct answer seems to have been

strings index.dat | grep Visited |less 

giving me lines like the end of the mail (Excuse Evolution's nutty
Wrapping). But we'll still leave the award with Proinnsias because he
did most of the work that worked. I haven't the cheek to claim it
anyhow.

So the trick to improving that would be to trim the crud (cookies?)
without losing the redirects and subdirs. That is way beyond my html
parsing knowhow and regex skills, so I'll wade through the crud, and
thank all who offered suggestions.

-- 
        With Best Regards,

        Declan Moriarty.


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-- 
        With Best Regards,

        Declan Moriarty.