The history Meme

Been seeing this meme going around and thought "why not?":

$ history|awk '{a[$2]++} END{for(i in a){printf "%5d\t%s\n",a[i],i}}'|sort -rn|head
  85    pylint
  60    svn
  58    python
  48    ls
  40    git
  38    cd
  32    sudo
  21    ping
  15    ssh
  15    scp