ubuntu@localhost:~$ sudo snap install --devmode --edge classic
[\] Mount snap "classic" (6)

classic (edge) 16.04-3 from 'canonical' installed
ubuntu@localhost:~$ sudo classic.enable
sudo: classic.enable: command not found
ubuntu@localhost:~$ sudo classic.enable
sudo: classic.enable: command not found
ubuntu@localhost:~$ sudo clas^C
ubuntu@localhost:~$ ls /snap/bin/
classic.create  classic.reset  classic.shell
ubuntu@localhost:~$ sudo /snap/bin/classic.create 
Creating classic environment
sudo /snap/bin/classic.shell
(Reading database ... 11224 files and directories currently installed.)
Preparing to unpack .../apt_1.2.12~ubuntu16.04.1_armhf.deb ...
Unpacking apt (1.2.12~ubuntu16.04.1) over (1.2.12~ubuntu16.04.1) ...
Selecting previously unselected package locales.
Preparing to unpack .../locales_2.23-0ubuntu3_all.deb ...
Unpacking locales (2.23-0ubuntu3) ...
Setting up apt (1.2.12~ubuntu16.04.1) ...
Setting up locales (2.23-0ubuntu3) ...
Generating locales (this might take a while)...
Generation complete.
Processing triggers for libc-bin (2.23-0ubuntu3) ...
ubuntu@localhost:~$ sudo /snap/bin/classic.shell
(classic)ubuntu@localhost:~$ sudo -s
[sudo] password for ubuntu:
root@localhost:~# ls /dev/pts
ptmx