[clue] seeking regex advice

[Dan Kulinski]

Why no use sed -ire 's/[0-9]{2}\.[0-9]{2}\.[0-9]{2,3}\.[0-9]{2,3} ... ?

This should catch NN.NN.NN.NN, NN.NN.NN.NNN, NN.NN.NNN.NN and NN.NN.NNN.NNN.

Good luck.


On Tue, Sep 2, 2014 at 9:54 AM, Mike Bean <beandaemon at gmail.com> wrote:

>
> So I have this script that does deployments of large numbers of virtual
> machines by cloning from a template and customizing the clone based on the
> contents of a CSV file.   It's not especially pretty, but the functionality
> is there, it's pretty solid (sans ONE bug).   It doesn't adjust the ip
> addresses in /etc/hosts properly.   I was hoping the cluebies might provide
> some advice.   Our /etc/hosts files look like this:
>
> xx.xx.xx.xx (server).domain
> xx.xx.xx.xx (server)gpfs server.domain
>
> the code from the script looks like this:
>
> #changes IP addresses in /etc/hosts
>  $cmd = "sed -i 's/[0-9][0-9].[0-9][0-9].[0-9][0-9].[0-9][0-9] $VMName
> /$publicIP/g' /etc/hosts"
> Invoke-VMScript -VM $VMName -GuestUser "root" -GuestPassword $guestPass
> -ScriptText $cmd -Confirm:$false
>
> There's two logical problems I'm trying to solve.
>
> Problem#1 is we have two common IP spaces, one of which is xx.xx.xx.xx,
> and the other is xx.xx.xxx.xxx.  Obviously with the regex the way it is, it
> only catches xx.xx.xx.xx.
>
> Problem#2 is how to adjust the sed command so that it replaces the public
> line with the public address, and the gpfs line with the gpfs address.
>
> I'm kinda scratching my head here trying to figure out a regex that would
> fit the bill, advice is appreciated.
>
> (Oh, distro is RHEL6.3)
>
> eep - the longer I look at that, the more I realize that sed is all kinds
> of messed up.
>
> Mike B.
>
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