a123oclock

Hi all, Not sure if this is the best place to post so please let me know if not. As part of the computing GCSE this year the students have to run bash commands, i was thinking that the best way of doing this was to run a live version of linux using VirtualBox. The teacher doesnt want to use Cygwin if possible. What i'd like to know is how you guys have achieved this and what tips you may have to securely give students access to a linux terminal Thank you in advance