https://unix.stackexchange.com/questions/52762/trying-to-sort-on-two-fields-second-then-first Default sort uses "r" key for reverse order, e.g. `sort -k 2r,2 -k 3,3`.
https://unix.stackexchange.com/questions/52762/trying-to-sort-on-two-fields-second-then-first
Default sort uses "r" key for reverse order, e.g.
sort -k 2r,2 -k 3,3.