There has been a code on being used on Ubuntu planet, first posted here, that shows your most used commands on the terminal. It uses the history command to find the 10 most used commands. Wordpress seems to screw up the quotes in the code, so copy it from here.
And here are my most used commands:
70 cd 51 wine 50 sudo 34 ls 30 top 26 winecfg 23 ping 23 exit 21 ssh 13 man
The large number of “wine” uses is a result of my recent attempts to run some Windows games.