From: Fabio Rodrigues (fleandror2@gmail.com)
Date: Tue Sep 12 2006 - 16:59:43 ART
In the the first Regular Expression, remove the space between [ and 0, like
this:
^100(_[0-9]+)?$
This is the correct first regular expression.
----- Original Message -----
From: "Victor Cappuccio" <cvictor@protokolgroup.com>
To: "'David Timmons'" <masterdt@yahoo.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, September 12, 2006 4:34 PM
Subject: RE: Regular Expressions
> Hi David, Sorry but I would thing that both Regular Expression are not the
> same.
>
> The first Regular Expression matches this: ^100(_[ 0-9]+)?$
> 100
> 100 12
> 100 12 1 1 1
> 100 12 1 2
> 100 12 1 3
> 100 12 21
> 100 52 1 2
>
> And the second regular expression ^100_[0-9]*$ matches this
> 100
> 100 32
> 100 33
> 100 44
> 100 66
> 100 X <- Only One Time
>
> Please correct me if I'm wrong, but that is what I can understand from the
> output from this route-server.gt.ca
> Also there is a nice explanation of Regular Expression at IEWB-RS
> Solutions
> Guide Lab 12
>
> Thanks
> Victor.-
>
> -----Mensaje original-----
> De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de
> David
> Timmons
> Enviado el: Martes, 12 de Septiembre de 2006 03:14 p.m.
> Para: Tim Chan; Fabio Rodrigues; ccielab@groupstudy.com
> Asunto: Re: Regular Expressions
>
> Hi,
>
> Think these two lines produce the same results. Really it is just saying
> the
> that the originating AS can contain 1 or more numbers between for zero to
> nine; however, the set should include the empty string. I would guess that
> this type of regular expression would take a little extra processing
> power.
>
> dt
>
> ----- Original Message ----
> From: Tim Chan <timanji@yahoo.com>
> To: Fabio Rodrigues <fleandror2@gmail.com>; ccielab@groupstudy.com
> Sent: Tuesday, September 12, 2006 2:01:16 PM
> Subject: Re: Regular Expressions
>
>
> Search for "lookingglass router". You can telnet into these routers and
> play with
> regular expressions to see how each one differs.
>
> This is one for example. Telnet to "route-server.ip.att.net". They have
> a
> peering with
> AS7018, so make sure that is the AS you're using in your expressions.
>
> ^7018(_[ 0-9]+)?$
> ^7018_[0-9]*$
>
> -tim
>
> ----- Original Message ----
> From: Fabio Rodrigues <fleandror2@gmail.com>
> To: ccielab@groupstudy.com
> Sent: Tuesday, September 12, 2006 8:11:42 AM
> Subject: Regular Expressions
>
> Hi All,
>
> does anyone knows to say the difference of the effect (if exists) of these
> two
> regular expressions?
>
> ^100(_[ 0-9]+)?$
> ^100_[0-9]*$
>
>
> Tks,
>
>
> Fabio.
>
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