2
It's been a long time since I've used grep or sed but I think this can be done. How do I take a csv and format it vertically while maintaining/replicating the first columns.
Ex.
Input:
A, 1, 2, 3
B, 1, 2, 3
C, 1, 2, 3
Output:
A, 1
A, 2
A, 3
B, 1
B, 2
B, 3
C, 1
C, 2
C, 3