Merrills-Mac-mini:~ root# ls -lO /System /usr 
/System:
total 0
-rw-r--r--   10 root  wheel  restricted    0 Apr  1 10:46 .localized
drwxr-xr-x   43 root  wheel  restricted 1376 Apr  1 10:46 Applications
drwxr-xr-x    4 root  wheel  restricted  128 Apr  1 10:46 Cryptexes
drwxr-xr-x@   2 root  wheel  restricted   64 Apr  1 10:46 Developer
drwxr-xr-x    5 root  wheel  restricted  160 Apr  1 10:46 DriverKit
drwxr-xr-x  145 root  wheel  restricted 4640 Apr  1 10:46 Library
drwxr-xr-x   14 root  wheel  restricted  448 Apr  1 10:46 Volumes
drwxr-xr-x    5 root  wheel  restricted  160 Apr  1 10:46 iOSSupport

/usr:
total 0
lrwxr-xr-x    1 root  wheel  restricted    25 Apr  1 10:46 X11 -> ../private/var/select/X11
lrwxr-xr-x    1 root  wheel  restricted    25 Apr  1 10:46 X11R6 -> ../private/var/select/X11
drwxr-xr-x  936 root  wheel  restricted 29952 Apr  1 10:46 bin
drwxr-xr-x   32 root  wheel  restricted  1024 Apr  1 10:46 lib
drwxr-xr-x  347 root  wheel  restricted 11104 Apr  1 10:46 libexec
drwxr-xr-x    4 root  wheel  sunlnk       128 Apr 19 20:26 local
drwxr-xr-x  230 root  wheel  restricted  7360 Apr  1 10:46 sbin
drwxr-xr-x   42 root  wheel  restricted  1344 Apr  1 10:46 share
drwxr-xr-x    5 root  wheel  restrexity
icted   160 Apr  1 10:46 standalone