Well, now that I'm back from St. Louis, I was catching up on Planet. Here's mine:
$ history | awk '{a[$2]++ } END{for(i in a){print a[i] " " i}}'|sort -rn|head
252 ls
232 cd
49 cat
38 tail
38 ssh
37 rsync
29 ps
26 sudo
23 vi
17 ll


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