Rooted! This box got me to hacker rank 
While I really spend a loooong time on getting the inital foothold right (and, as I must confess, got annoyed by it more than once 
), I thoroughly enjoyed the user part! Thanks to the creator @clubby789 and shoutout to @abhizer , @anak1n and especially @burntnoodle for helping me sort out my semicolons, double and single quotes 