Re: [PLUG] egrep help

What I am doing is picking up the IP addresses, my problem seems to be finding a "||" immediately following the IP address. What I tried seems to be picking up a | followed by a string and another | followed by a string. What I am looking for is [IP address][||]

finding the 2 pipes in a row is what I am having trouble with. Thanks for the info so far, this is helpful however.

On Fri, Oct 10, 2008 at 4:46 PM, <skydiver38@comcast.net> wrote:

off the top of my head, so take this with a grain of salt...

You don't have anything for your "*"s to match. IIRC, the "*" means "0 or more", but you don't tell it zero or more of *what*. I'm not sure if egrep recognizes "\d" as meaning "numeric chars" or if you need to qualify a range of chars like "[0-9]".

And does egrep recognize "{1-3}" for specific numbers of items, or are you limited to "1 or more" type of qualifiers?

so something like "cat Developer*.csv | egrep [0-9]?\.[0-9]?\.[0-9]?\.[0-9]?\|\| | head" might work. You may need to quote the regex. Replace the "?"s with "{1-3}" if egrep recognizes that (my experience with regexes is with perl).

Good luck - someone more knowledgable will probably speak up soon.

-------------- Original message --------------
From: "Michael Lazin" <microlaser@gmail.com>

Hi, I'm trying to grep a CSV for an IP address followed by ||

I tried grep Developer *.csv | egrep \|*\.*\.*\.*\|\||head

but this is not working, it is picking up false positives, what I am looking for specifically is an IP address followed by || in the csv. I am working on trying to teach myself regular expressions now but I am just in the beginning stages. Any help would be appreciated.

--
Michael Lazin
To gar auto estin noein te kai enai

---------- Forwarded message ----------
From: "Michael Lazin" <microlaser@gmail.com>
To: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org>
Date: Fri, 10 Oct 2008 20:21:37 +0000
Subject: [PLUG] egrep help
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General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug

--
Michael Lazin
To gar auto estin noein te kai enai