Command Line Meme
Inspired by Simon, I thought I'd follow the crowd;
andy47@Mort:~$ history|awk '{a[$2]++} END{for(i in a){printf "%5dt%sn",a[i],i}}'|sort -rn|head
187 cd
66 whoswho
46 svn
30 python
20 rm
16 ls
15 open
13 vi
13 grep
10 ipython