All Your History Belong To Us!

kamyar@luna:~$ history|awk '{a[$2]++} END{for(i in a){printf "%5d\t%s \n",a[i],i}}'|sort -rn|head
109 ls
67 cd
63 sudo
21 wget
20 man
19 ping
16 ifconfig
14 less
14 exit
14 emacs