-# known bugs:
-#
-# sbcl-0.6.8:
-#
-# (SB-EXT:RUN-PROGRAM "echo" NIL)
-# => error in function SB-IMPL::%ENUMERATE-SEARCH-LIST:
-# Undefined search list: path
-#
-# (SB-EXT:RUN-PROGRAM "/bin/uname" '("-a") :OUTPUT :STREAM)
-# doesn't return a STREAM (the way doc string claims)
-