我在根终端上乱搞，不小心删除了整个/bin文件夹。这很危险吗？我该怎么做才能解决这个问题？
root@laptop:/# ls -l /
total 80
drwxr-xr-x 3 root root 4096 Oct 11 19:10 boot
drwxr-xr-x 16 root root 3360 Oct 11 20:21 dev
drwxr-xr-x 123 root root 4096 Oct 12 10:08 etc
drwxr-xr-x 3 root root 4096 Dec 14 2012 home
lrwxrwxrwx 1 root root 29 Oct 11 19:10 initrd.img -> boot/initrd.img-3.2.0-4-amd64
lrwxrwxrwx 1 root root 30 Oct 11 18:48 initrd.img.old -> /boot/initrd.img-3.2.0-4-amd64
drwxr-xr-x 15 root root 4096 Oct 11 18:54 lib
drwxr-xr-x 2 root root …linux ×1