dircolors: H. Peter Anvin
dirname: David MacKenzie, Jim Meyering
du: Torbjörn Granlund, David MacKenzie, Paul Eggert, Jim Meyering
-echo: FIXME unknown
+echo: Brian Fox, Chet Ramey
env: Richard Mlynarik, David MacKenzie
expand: David MacKenzie
expr: Mike Parker