As it was a popular blogger's topic a few month ago, I'll start this blog with a very uninteresting post with some stats about my shell history...
fc -l -10000 | awk '{a[$2]++ } END{for(i in a){print a[i] " " i}}' | sort -rn | head
Unfortunately the sample is not large enough to be meaningful and so the result varies greatly from time to time...
Here is the result from my first try (on the beginning of May):
177 nosetests 161 svn 110 vi 109 ls 90 cd 46 python 44 sudo 29 rm 21 ps 18 top
And today:
174 ls 141 sudo 121 cd 117 vi 96 svn 54 nosetests 46 l 27 chmod 24 rgrepv.sh 13 rm