>
> OK - I'm running tail on exim logs and extracting IP addresses that
> match a specific criteria. So I have a stream of raw IP addresses coming
> in that I want to pipe into a program that takes each IP address and
> runs a command with the IP address as the parameter.
>
> How do I do that?

If you mean what I think you mean then the shellscript answer would be
something like:

mangle_ip()
{
while read ip
do
my_command "$ip"
done
}

tail -f exim.log | sed -n "s/<stuff>/<otherstuff>/p" | mangle_ip


however you can probably do what you want with xargs instead, but it
depends what you want to do with each IP that you extract.

Julian
--
Julian King
Computer Officer, University of Cambridge, Unix Support

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