Display content of outside command line app inside gamespace

Hi there, I had trouble finding anything about this so: My goal is to build a simple 3d room, accessed in VR, which displays on its walls 2d surfaces which show the content of command-line applications like Putty or the windows terminal. I want to build a sort of command room.

I also don't want to display video inside the surfaces, only the text from the processes, so if there is a non-display technique which would mean to work with a pipe or a socket or something similar, that would work as well. I would have no problem to buy plugins if that would solve it. Using the standard output or StreamReader could be another option.

Many thanks!