Date: Sat, 2 Apr 2022 17:17:26 -0500 From: Edgar Pettijohn <edgar@pettijohn-web.com> To: questions@freebsd.org Subject: Re: extracting an IPv4 address from text? Message-ID: <b2982d76-5edd-2cd0-1cae-83709afa6a39@pettijohn-web.com> In-Reply-To: <25160.44484.392802.868667@jerusalem.litteratus.org> References: <25160.44484.392802.868667@jerusalem.litteratus.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On 4/2/22 15:10, Robert Huff wrote:
> Hello:
> Let's suppose I want to parse a line from auth.log and extract
> the IP address (if any) to stdout.
> I'm assuming there is a robust way to do this using standard
> command-line tools ... but my brain is flailing on the exact method.
> Anyone have a example they'd be willing to share? Or is this a
> problem already solved?
>
>
> Hopefully,
>
>
> Robert Huff
>
>
>
>
>
>
If perl is available:
$ perl -MRegexp::Common='net' -n -e "print if $_ =~ $RE{net}{IPv4}"
/path/to/logfile
Edgar
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?b2982d76-5edd-2cd0-1cae-83709afa6a39>