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Adding total of first field for each number in the second field

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# 1  
Old 01-17-2011
Adding total of first field for each number in the second field
Dears,

I need a script or command which can find the unique number from the second filed and against that number it adds the total of first field .
Code:
17215630 ,   0
907043 ,1
201050 ,10
394149 ,4
1964 ,9
17215630, 0
907043 ,1
201050, 10
394149 ,4
1964 ,9
1234234, 55
23 ,100
33 ,67

Shown below is the expected output
Code:
34431260,0
1814086,1
402100,10
788298,4
3928,9
1234234, 55
23 ,100
33 ,67

Please let me know how can I achieve this.

Regards,
XYZ

Moderator's Comments:
Mod Comment Please use code tags when posting data and code samples!
# 2  
Old 01-17-2011
Unsorted:
Code:
 awk -F\, '{a[$2]+=$1}END{for (i in a ){printf("%d ,%d\n", a[i],i)}}'  file

# 3  
Old 01-17-2011
Code:
 ruby -F"," -ane 'BEGIN{h={};h.default=0};h[$F[1].to_i]+=$F[0].to_i;END{h.each_pair{|x,y|puts "#{y},#{x}\n" } }' file

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