[quotemstr]

As an aside --- isn't the traditional flat namespace of unix command names getting a bit crowded nowadays?

[anitil]

We've got space for 26^2 2-letter commands...

> for d in $(echo $PATH | tr ":" "\n") ; do ls $d | grep "^..$"; done | sort -u | wc -l

> 52

I can fit a few more in

(edit: I can't work out how to put code in a comment)