Linux 2015:

> ls -lR /
/:
total 288
drwxr-xr-x   2 root     root    4096 2015-12-13 12:02 bin -> /usr
drwxr-xr-x   3 root     root    4096 2015-12-13 12:18 boot
drwxr-xr-x   2 root     root    4096 2015-12-13 12:02 usr

/boot:
total 39420
-rw-r--r-- 1 root root 3177235 2015-12-02 19:04 vmlinux-4.0.4-default.gz
lrwxrwxrwx 1 root root      25 2015-12-13 12:12 vmlinuz -> vmlinux-4.0.4-default.gz

/usr:
total 312
drwxr-xr-x   2 root root  81920 2015-04-12 10:05 bin

/usr/bin:
total 389780
-rwxr-xr-x   1 root root  58957575377 2015-12-03 07:48 systemd
-rwxr-xr-x   1 root root 457853177235 2015-12-03 07:49 userspaced
-rwxr-xr-x   1 root root   1957575377 2015-12-03 07:50 guid