Poste as saídas:
ls -l /
ls -l /usr
"ls - l /":
total 96
drwxr-xr-x 2 root root 4096 Ago 31 23:44 bin
drwxr-xr-x 3 root root 4096 Ago 31 23:49 boot
drwxrwxr-x 2 root root 4096 Ago 31 23:09 cdrom
drwxr-xr-x 16 root root 4140 Set 7 13:42 dev
drwxr-xr-x 134 root root 12288 Set 7 13:19 etc
drwxr-xr-x 4 root root 4096 Ago 31 23:11 home
lrwxrwxrwx 1 root root 33 Ago 31 23:48 initrd.img -> boot/initrd.img-3.16.0-44-generic
lrwxrwxrwx 1 root root 33 Ago 31 23:17 initrd.img.old -> boot/initrd.img-3.16.0-23-generic
drwxr-xr-x 24 root root 4096 Ago 31 23:18 lib
drwxr-xr-x 2 root root 4096 Ago 31 23:40 lib64
drwx------ 2 root root 16384 Ago 31 22:58 lost+found
drwxr-xr-x 2 root root 4096 Out 22 2014 media
drwxr-xr-x 2 root root 4096 Out 15 2014 mnt
drwxr-xr-x 2 root root 4096 Out 22 2014 opt
dr-xr-xr-x 238 root root 0 Set 7 13:18 proc
drwx------ 2 root root 4096 Set 5 16:45 root
drwxr-xr-x 25 root root 800 Set 7 13:19 run
drwxr-xr-x 2 root root 12288 Ago 31 23:46 sbin
drwxr-xr-x 2 root root 4096 Out 22 2014 srv
dr-xr-xr-x 13 root root 0 Set 7 13:18 sys
drwxrwxrwt 6 root root 4096 Set 7 14:19 tmp
drwxr-xr-x 10 root root 4096 Out 22 2014 usr
drwxr-xr-x 13 root root 4096 Out 22 2014 var
lrwxrwxrwx 1 root root 30 Ago 31 23:48 vmlinuz -> boot/vmlinuz-3.16.0-44-generic
lrwxrwxrwx 1 root root 30 Ago 31 23:17 vmlinuz.old -> boot/vmlinuz-3.16.0-23-generic
"ls -l/usr":
total 120
drwxr-xr-x 2 root root 45056 Ago 31 23:49 bin
drwxr-xr-x 2 root root 4096 Out 22 2014 games
drwxr-xr-x 35 root root 20480 Ago 31 23:44 include
drwxr-xr-x 156 root root 20480 Ago 31 23:46 lib
drwxr-xr-x 10 root root 4096 Out 22 2014 local
drwxr-xr-x 2 root root 12288 Ago 31 23:46 sbin
drwxr-xr-x 288 root root 12288 Ago 31 23:49 share
drwxr-xr-x 6 root root 4096 Ago 31 23:46 src