UNIX for Dummies Questions & Answers

[FONT=Courier New][FONT=Courier New]I am using a script which does a lot of math and I am facing a problem.One value is greater than 10 mi and the script converts it to exponents i.e 70000000 7e...
and this is causing my statements to become invalid.
This is what I used
A=`expr "${total}-${FAC}"|bc`

where $total and $FAC are variables and $total is the total which is got form an awk statement...
total=`awk '{tot=tot+$1} END {print tot}' "$filename"`

Could someone help me with this?
Thanks

try formatted print in awk , something like
'{printf "%f\n",$tot}'

instead of jusr print.

Hi Ahan,
I tried it but I got a syntax error .It defenitely is in the following statement:
total=`awk '{tot=tot+$1} END {print tot}' "$filename"`Any other suggestion?Thanks for the quick response

I had a similar issue. I wrote a small script to calculate total using 'for' loop and 'bc'.
for i in `list whatever column you want`
do
sum=$(echo "$sum + $i"|bc)
done
echo "Summed up value is $sum"
Regards,
Ranjith

do this way ...

Code:

sum=0

for i in 1 2 3 4 5 6
do
echo $i
((sum=sum+i))
done
echo "Summed up value is $sum"

~

The change is not working when you have floating values. The 'bc' is taking care of the floating numbers but the ((sum=sum+i)) is not taking the floating values. instead it is truncating the values and summing them up.

Hi
I tried using the for loop,but I need to find the sum of numbers in a file,called temp.
This file has approx 85000 numbers in one column and i used :

for i in temp
do
total=`expr "$total + $i"|bc`
done

I debugged the script and got a null value for the "total",
I even tried using
for i in ` cat temp` ....

it kind of worked but is taking a loong time.and the file is 174 KB in size.
Is there anyway to find the sum in a shorter time ?
Any help will be appreciated.