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string manipulating

 
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# 1  
Old 04-15-2008
Tools string manipulating
I have a file like this:
Code:
Tue Apr 15 10:41:47 MDT 2008 FINAL RESULT; 6
Tue Apr 15 10:41:47 MDT 2008 FINAL RESULT; 2
Tue Apr 15 10:41:47 MDT 2008 FINAL RESULT; 5

With this command seira=`cut -f 2 -d ';' tes.txt` i take all the results (6,2,5 etc) and i store them in variable seira

When i do echo $seira it prints: 6 2 5

With this command i want to take the sum of the results from seira where they are stored 6+2+5 etc

Code:
while read seira
	do
	echo $seira
		sum=0
		sum='expr $sum + $seira'
		echo $sum
	done

But it doesn't work. What is wrong?
Last edited by Yogesh Sawant; 04-15-2008 at 05:21 AM.. Reason: added code tags
# 2  
Old 04-15-2008
You could use something like this:

Code:
sum=$(($(cut -d\; -f2 file|paste -sd+ -)))

# 3  
Old 04-15-2008
Tools Ok But
Thank you but this is my last option. I would like an option with while an d the read command to learn better manipulate strings.Thats why. Can you or anybody else suggest anything else? Withe while read?
# 4  
Old 04-15-2008
Code:
$ while read;do num=$((num+${REPLY##*;}));done<file;printf "%d\n" $num
13

With zsh:

Code:
% while read;do ((num+=${REPLY##*;}));done<file;print $num
13

# 5  
Old 04-15-2008
Tools not exactly
something is not working could someone fix the problem with this solution:
while read seira
do
sum=0
sum='expr $sum + $seira'
echo $sum
done
# 6  
Old 04-15-2008
...

Code:
cut -d\; -f2 file|while read seira
do
  sum=`expr ${sum-0} + $seira`
  echo $sum
done

# 7  
Old 04-15-2008
Tools i do this but
I am giving th commands not from shell but within the script. When it enters while it stops and when a press a key it only prints the body o f while. It doesnt execute nothing
 
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