topic Re: BC to add items in a collumn in Operating System - HP-UX

BC to add items in a collumn

hpuxrox — Tue, 17 Apr 2007 09:50:13 GMT

I have a file that looks like this,

143413413
412342346
432434877
434978867
432654657

How would I use bc to cat this file and add the numbers?

Re: BC to add items in a collumn

Peter Godron — Tue, 17 Apr 2007 09:54:16 GMT

Hi,
why bc ?

See earlier threads:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=22594
https://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1080308

Re: BC to add items in a collumn

hpuxrox — Tue, 17 Apr 2007 09:56:01 GMT

Sorry, I can not use awk or perl

Re: BC to add items in a collumn

Peter Godron — Tue, 17 Apr 2007 10:07:12 GMT

Hi,
found on an old website:
#!/bin/ksh
TOTAL=0
for NUMBER in `cat `
do
TOTAL=`echo $NUMBER + $TOTAL |bc -l`
done
echo $TOTAL

Re: BC to add items in a collumn

A. Clay Stephenson — Tue, 17 Apr 2007 10:15:57 GMT

Here is one approach:

TF="/var/tmp/TF${$}"

trap 'eval rm -f ${TF}' 0 1 2 3 15

INFILE=myfile
echo "a=0" > ${TF}
cat ${INFILE} | while read N
do
echo "a+=${N}" >> ${TF}
done
echo "a" >> ${TF}
TOT=$(bc < ${TF})
echo "Total: ${TOT}"

Re: BC to add items in a collumn

harry d brown jr — Tue, 17 Apr 2007 10:27:47 GMT

cat filename |xargs echo|sed "s/ / + /g"|bc

live free or die
harry

Re: BC to add items in a collumn

Peter Nikitka — Tue, 17 Apr 2007 10:56:40 GMT

Hi,

a solution with dc:

(sed '2,$s/$/+/' /tmp/num; print p) | dc

mfG Peter

Re: BC to add items in a collumn

Sandman! — Tue, 17 Apr 2007 11:41:17 GMT

Yet another way of doing the same thing...

# p=0; while read l;do p=$(echo "$l + $p" | bc); done < infile;echo $p

~cheers

Re: BC to add items in a collumn

Hein van den Heuvel — Tue, 17 Apr 2007 12:50:30 GMT

>> Sorry, I can not use awk or perl

Unacceptable.

Please explain.

Sure you can.

Apparently you can not use BC either, so why not use / learn somethign much more versatile and useful in the long run.

Regards,
Hein.

Re: BC to add items in a collumn

hpuxrox — Tue, 17 Apr 2007 12:56:11 GMT

Re: BC to add items in a collumn

Hein van den Heuvel — Tue, 17 Apr 2007 13:58:49 GMT

Randall,

You may not have liked my answer and that's ok, but please humor me and explain why it had to be 'bc' and why you had to 'cat' the file. I'm curious and always eager to learn!

Regards,
Hein.