Re: [PLUG] egrep help

[skydiver38@comcast.net]

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

--- Begin Message ---

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

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