What is interesting is that compared to the older history, git has replaced svn, pip has replaced easy_install, and virtualenv has now completely subsumed buildout. Oh, how the mighty have fallen!
$ history | awk '{a[$2]++ } END{for(i in a){print a[i] " " i}}'|sort -rn |head -n 20 209 git 123 python 34 ls 31 mate 18 cd 14 pwd 9 hg 8 touch 7 rm 6 cp 5 pip 5 mv 5 django-admin.py 4 mkvirtualenv 3 mysql 3 mkdir 3 bash 2 deactivate 2 add2virtualenv 1 workon