linux - Replace every n'th occurrence in huge line in a loop

Question

I have this line for example:

1,2,3,4,5,6,7,8,9,10

I want to insert a newline ( ) every 2nd occurrence of "," (replace the 2nd, with newline) .

Answer 1

This might work for you (GNU sed):

sed 's/,/
/2;P;D' file