Cool idea! I love spaceship horrors and hacking games, and your game have both of this!
And some notes from non-native English IRL programmer and former sysadmin.
1) I type fast and easy, but Tab auto completion must have anyway...
2) No command to clear console.
3) No reaction to empty command. (I very often IRL use this with linux terminal to split prev output from new with diff number of lines to separate tasks)
4) Text a bit fast for me. Not by speed itself, but speed + visual effect and no visual separation from commands or log lines and line-wrapping...