The command to find the list of commands that you use the most is:

history | awk '{print $2}' | sort | uniq -c | sort -rn | head

I like this version because it has uses a few simple and useful commands.

My list:

11398 ls
 6724 cd
 5200 vim
 2330 sudo
 1462 mutt
 1131 perl
 1122 mplayer
 1036 svk
  825 mpc
  795 lt

The lt command is a shell alias for ls -lt. Other people don’t have a editor in this list. This probably occurs because they use emacs which works better when it is open a long time. I use vim that way sometimes, but most of the time I use it for small and fast changes.

The number are this high because my history limit is higher than the default. You can use the following lines to increase the limit.

export HISTFILESIZE=1000000000
export HISTSIZE=1000000
shopt -s histappend
export PROMPT_COMMAND='history -a'

You should take a look at the bash reference to find out what everything does.