fgimenez@localhost:~$ snap list
Name         Version        Rev   Developer  Notes
basic-hooks  1.0            x1               -
core         16-2.26.4      2086  canonical  -
pi2          16.04-0.17     29    canonical  -
pi2-kernel   4.4.0-1055.62  31    canonical  -
fgimenez@localhost:~$ snap version
snap    2.26.4
snapd   2.26.4
series  16
kernel  4.4.0-1057-raspi2
fgimenez@localhost:~$ ls -l /snap/core/current/usr/lib/snapd/snap-confine
-rwsr-xr-x 1 root root 129448 Jun  1 18:02 /snap/core/current/usr/lib/snapd/snap-confine