awk 기본

awk '{print $12}' fd.txt > fd_1.txt
awk '{print substr($1,2,length($1)-2)}' fd_1.txt > fd_$1.txt


$1별 $2의 합
awk '
{
   TotalLine[$1] += $2
}
END {
  for (Group in TotalLine) {
     print Group, TotalLine[Group]
  }
}' add_1.txt > add_f.txt