A fun shell script from #euruku

log.txt

$ history | awk {'print $2, $3, $4'} | sort | uniq -c | sort -k1 -rn | head -n 30
 610 git status 
 568 git commit -m
 491 git add .
 252 git push origin
 176 bundle  
 138 rails s 
 128 ls  
 120 git commit --amend
 114 git reset --hard
 109 rvm use 1.9.3
 104 cd .. 
 103 mvim Gemfile 
  94 rake db:migrate 
  90 git log 
  75 rails c 
  74 rake  
  70 rake test 
  68 bundle exec rake
  67 git push heroku
  63 git fetch origin
  58 exit  
  49 git checkout master
  44 git rebase -i
  41 bundle update 
  40 git rebase origin/master
  40 cucumber  
  38 git diff 
  38 git checkout -b
  37 rspec  
  35 irb  

Why not use directly your history file, and avoid the arbitrary 2 arguments limit?
sort $HISTFILE | uniq -c | sort -k1 -rn | head -n 30

Maybe I should answer that:

I told people at eurucamp 2012 in Berlin to go ahead and type that command into their shell just to get some insight on what they are doing over and over again and what they might be able to automate. I decided to collect only two words of every typed command to be able to merge all git commit -m calls into one entry on the list. Of course it is arbitrary, but it worked very well for me. Feel free to play with it as much as you want. It's all about introspection and getting to know ones own habits and workflows.

For example, another fun thing might be to see which commands are executed the most in a row (just leave out the first sort):
history | awk {'print $2, $3, $4'} | uniq -c | sort -k1 -rn | head -n 30