Date: Thu, 28 Aug 2008 10:51:18 +0200 From: Peter Boosten <peter@boosten.org> To: freebsd-questions@freebsd.org Cc: Martin McCormick <martin@dc.cis.okstate.edu> Subject: Re: Regular Expression Trouble Message-ID: <48B66706.9060303@boosten.org> In-Reply-To: <20080827152900.GB30783@it.ca> References: <200808271325.m7RDP28b044255@dc.cis.okstate.edu> <20080827152900.GB30783@it.ca>
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Paul Chvostek wrote:
>> This is an attempt to isolate every MAC address that
>> appears and then sort and count them to see who is having
>> trouble or, in some cases, is causing trouble.
>
> Then you still may want to use awk for some of that...
>
> cat /var/log/dhcpd.log | \
> sed -nE 's/.*([0-9a-f]{2}(:[0-9a-f]{2}){5}).*/\1/p' | \
> awk '
> { a[$1]++; }
> END {
> for(i in a){
> printf("%7.0f\t%s\n", a[i], i);
> }
> }
> ' | sort -nr
>
Euhmm:
sed -nE 's/.*([0-9a-f]{2}(:[0-9a-f]{2}){5}).*/\1/p' /var/log/dhcpd.log|\
sort | uniq -c
:-)
Peter
--
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