ls -ld usr
drwxr-xr-x 3 root root   512 Jan 20 13:06 usr
ls -ld usr/include
drwxr-xr-x 3 root root   512 Jan 20 13:06 usr/include
ls -ld usr/include/sys
drwxr-xr-x 2 root root 11776 Jan 20 13:07 usr/include/sys