I have a huge pile of data—around 30 to 40 Million data items. We need to process these files and send to another interface team.Below is my file format which we receivec1  c2  c3  c4  c5  c6A   B   C   D   5   sA   B   C   D   4   sA   B   E   F   5   sA   B   E   F   8   SC   D   E   F   9   SI need to print in my output file all of the columns. Since this is related to GPRS usage, we need to group by c1 - c4 and then if everything is matching we need to sum up the c5, and print everything in the output file.Below is a sample output file.c1  c2  c3  c4  c5  c6A   B   C   D   9   sA   B   E   F   13  sC   D   E   F   9   sI do not have many Unix or Perl resources in my team or outside team.Kindly  help me in this. I also heard that this work flow works a lot faster in Perl than in Unix scripting. If there is any other better way or method, also please suggest it to me.
Take a sum based upon particular columns
text processing;perl