oldfind − search for files in a directory hierarchy
oldfind [−H] [−L] [−P] [−D debugopts] [−Olevel] [path...] [expression]
The oldfind and find programs are functionally identical. The only difference between them is the implementation internals of how the filesystem is searched. The oldfind binary has a recursive implementation while find uses fts(3). The fts-based implementation will replace the recursive implementation but for the moment both implementations are installed.
The implementation which is installed as find on this system is the fts-based implementation, since the −−without−fts option was not passed to the configure script when findutils was built.
find(1), fts(3), Finding Files (on-line in Info, or printed).