Date: Tue, 19 Oct 1999 20:39:05 -0700 From: dannyman <dannyman@dannyland.org> To: chat@freebsd.org Subject: averaging numbers in a stream Message-ID: <19991019203905.B30514@stumpy.dannyland.org>
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ocassionally i wanna get stupid with pipes.
grep 'current members' mail/cron | awk '{print $1}' | sort | uniq -c | ( echo '(' && awk '{print $1"*"$2"+"}' && echo '0)/' && grep 'current members' mail/cron | wc -l ) | xargs echo > /tmp/tmp && echo `cat /tmp/tmp|bc`
Those first two commands create a stream of numbers, one per line, that I wish
to average. Is there a cleaner way to do this, all on one line, with a fairly
standard Unix shell? In my case, tcsh.
Not that this is actually IMPORTANT to me, I'm just having fun.
Personally, I think I'm cheating ... it's one thing to ... | ... ( ... && ...
&& ... && ... ) ... | but the last && echo bit is really just there because
butting the rest of the expression in backticks is just way nasty.
Anyways, back to your dreary little lives ...
-dman
--
dannyman - http://www.dannyland.org/~dannyman/
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