Adding of two column values

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# 1  
Old 04-09-2013
Adding of two column values

cat /tmp/xx.txt
1     4
1     5
1     6
2     1
2     1
2     1

i want to add the values of 2nd column resepect to 1st column values..for 1 in 1st column i need sum of all the values in 2nd column ..pls tell me hw to do it??

Last edited by Franklin52; 04-09-2013 at 09:48 AM.. Reason: Please use code tags for data and code samples
# 2  
Old 04-09-2013
What have you tried so far?
# 3  
Old 04-09-2013
i tried
awk 'BEGIN {sum=0} {sum=sum+$5} END {print sum}'

but it is giving total sum.........
but i need to differentiate.........for 1 ( in 1st column ) i want diff sum and for 2 ( in 1st column) i need diff sum

Last edited by Franklin52; 04-09-2013 at 09:43 AM.. Reason: Please use code tags for data and code samples
# 4  
Old 04-09-2013
awk '{a[$1]+=$2}END{for(i in a)print i, a[i]}' file

# 5  
Old 04-09-2013
thanks for your help.......
Now output is :
0 0
1 61
2 767
if i want to print 61 and 767 and 0 by i will do it.....
i mean if 0 (1st column) then print the count (which is in 2nd column)
# 6  
Old 04-09-2013
I don't see any 0 in the first column in your file in the first post.
Can you post your input file and the desired output?
# 7  
Old 04-09-2013
cat /tmp/vf.txt
0 0
1 61
2 767

i need to print only i will do it........
i need to print 0 ......
pls give me a code for this
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