[ale] Awk question

[Richard Bronosky]

You are right. That is why I sent my reply with the correct solution. I was
thinking that my emails were not getting to the list until Jim replied to a
post I made on another thread.
On Feb 6, 2012 2:55 PM, "Geoffrey Myers" <lists at serioustechnology.com>
wrote:

> Erik Mathis wrote:
> > awk '{sum+=$2} END {print sum}' filename
> > 310
> > awk '{subt-=$2} END {print subt}' filename
> > -310
>
> Seems to me that will total all the records.  The OP only want's the
> last two as I recall.
>
> >
> > Stolen and hacked from http://www.commandlinefu.com
> >
> > -Erik-
> >
> > On Fri, Feb 3, 2012 at 1:51 PM, Randy Ramsdell <rramsdell at activedg.com>
> wrote:
> >> I need to parse a file and then subtract next to last line field $2
> >> from the last line field $2 using awk and then convert this number to a
> >> percent.
> >>
> >> Data:
> >>
> >> $date 100
> >> $date 103
> >> $date 107
> >>
> >> So ... ( 107 - 103 ) / 103 ...
> >>
> >> Clues?
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>
>
> --
> Until later, Geoffrey
>
> "I predict future happiness for America if they can prevent
> the government from wasting the labors of the people under
> the pretense of taking care of them."
> - Thomas Jefferson
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