summing values of a column

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# 1  
Old 08-24-2009
summing values of a column

I have a file which contains data as below:

                      GSPWeb Statistics for the period of last 20 days
  NBKID                 PAGE ACCESSED                                   PAGE COUNT
nbk1j7o              RMBS -> RMBSHome                                           1
nbk1j7o              RMBS -> TradingStrategy                                    1
nbk2coz              GSF -> GSFHome                                             1
nbk2coz              RMBS -> AgencyCMO                                          1
nbk2coz              RMBS -> PassThrough                                      102
nbk2coz              RMBS -> Prepayment                                       135
nbk2coz              RMBS -> RMBSHome                                           5
nbk2coz              RMBS -> TradingStrategy                                    6
nbk2gdl              GSF -> GSFHome                                           293
nbk2mcs              RMBS -> TradingStrategy                                    1
nbk2mfb              RMBS -> RMBSHome                                          41
nbk2w2w              GSF -> GSFHome                                             1

I want to find the sum of values in third column grouping by RMBS, GSF.

For example output should contain:

Total RMBS = 293
Total GSF = 295

This is part of a big project with lots of efforts I have reached this stage, was little stuck, awk command should help, but dont know how. Smilie
# 2  
Old 08-24-2009
awk 'NR>5{arr[$2]=arr[$2]+$5}END{for(i in arr) print "Total " i,arr[i]}' infile

# 3  
Old 08-24-2009
Thanks a lot !

Thanks buddy, this works I did a little more modifications to remove unnecessary content.
# 4  
Old 08-24-2009

open FH,"<a";
foreach my $key ( keys %hash){
  print $key,"->",$hash{$key},"\n";

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