Shell history meme, huh?

history | awk '{a[$2]++ } END{for(i in a){print a[i] " " i}}' | sort -rn | head
7 15:37
7 11:38
5 18:54
5 15:36
5 15:33
5 15:27
4 19:26
4 17:26
3 9:25
3 16:58

I use tcsh. Good times.