At Fri, 3 Dec 2010 12:57:59 -0800 (PST) CentOS mailing list <centos@xxxxxxxxxx> wrote:
>
>
>
> I have the need to know how many connection the server has, i run this command but i don't know how to sum all the results and get a final number.
> any ideas?
>
> netstat -an | grep -E 'tcp|udp' | awk '{print $6}' | sort | uniq -c | sort -n
>
> Â Â 1 CLOSE_WAIT
> Â Â 1 FIN_WAIT_2
> Â Â 1 LAST_ACK
> Â Â 1 TIME_WAIT
> Â Â 4 SYN_SENT
> Â 15
> Â 37 LISTEN
> Â 44 ESTABLISHED
<the above script> | awk '{print $1;}' | tr '\n' '+'|sed 's/\+$//g'|bc
The awk prints just the number, the tr replaces the newlines with +'s,
the sed strips off the trailing + (from the last newline), and bc does
the math.
>
>
>
> ----------------------------------
>
> Alejandro Rodriguez Luna
>
> Web: http://www.alexluna.org
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