Hi Arul,
You did not update the 3 latter "NR-1" entries. If each file is
100 lines long, they should be:
NR-1
NR+99
NR+199
NR+299
This is because NR is the "record number" or line number
that the 1 occurs on in the file. And that starts over at 1 for
each new file (awk command).
- rick
