Actually it stood the test of time quite well. System directory names are lowercase, short and mostly-standard. Granted, there is the /bin/, /sbin/, /usr/bin/,

Actually it stood the test of time quite well. System directory names are lowercase, short and mostly-standard. Granted, there is the /bin/, /sbin/, /usr/bin/, /usr/local/bin/... stuff, but at least /home/ directory is standard and applications really use it since forever, as opposed to Windows (apps saving user settings to registry, IE6 saving bookmarks to its "Program Files" dir - not sure how it is done now). One could argue that someone who knew Unix 30 years ago could still use command line in today's Linux without much problems.