topic Re: Shel Script Calculation in Operating System - HP-UX

Shel Script Calculation

KAMARULZAMAN HJ ALI — Sat, 09 Sep 2006 06:01:38 GMT

Hi,
Please find my shell script :
let Total=0
for i in `cat data1.dat`
do
let Total=$Total+1
done
echo $Total

I have series of integer number stored in data1.dat file.
If the range too huge, my calculation become wrong.
Please help.
Thanks

Re: Shel Script Calculation

Victor Fridyev — Sat, 09 Sep 2006 07:20:15 GMT

Hi,

Try to use awk or perl for calculations

HTH

Re: Shel Script Calculation

James R. Ferguson — Sat, 09 Sep 2006 07:43:45 GMT

Hi:

You are limited by the shell's 32-bit arithmetic. As noted, by Victor, 'awk' or Perl would provide a solution. Based upon your example, to sum the first field found in your file, do:

# awk 'END{print N};{N+=$1+0}' data1.dat

Regards!

...JRF...

Re: Shel Script Calculation

KAMARULZAMAN HJ ALI — Sat, 09 Sep 2006 08:56:00 GMT

thanks