`ls -l /usr/bin | wc -l` reports 1085 entries on my machine. Meanwhile, I have 40 entries in my ~/.rbenv/shims directory. I think the shell can handle it.
I'm sorry, I was not aware of the 'rehash' function, I thought rbenv would have to ship with all the required shims. The rehash functionality is quite clever and cool. Is there an easy way to have that automatically execute after I do any installation of a ruby or gem?
