How to add numbers in unix using loop for command?

Question

Could someone please help me out with loop problem. I need it to display the total of all the numbers. This is what i have tried so far:

sum=0  
for numbers in 6 9 -4 7   
do   
   sum=$(($sum+$numbers))    
echo $sum 
done

The output shows these numbers:

Are you only wanting to echo the final output? Don't print inside the loop, and just add to $sum. echo $sum outside the loop. — cwhelms
– cwhelms, Commented Mar 29, 2014 at 17:44

jaypal singh · Accepted Answer · 2014-03-29 20:29:52Z

1

Move the echo $sum outside of the for loop to display the final value, instead of displaying its running value from within the loop.

sum=0
for numbers in 6 9 -4 7
do
sum=$(($sum+$numbers))
done
echo $sum

jaypal singh

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answered Mar 29, 2014 at 17:50

bthoppae

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