Last night I downloaded 9vx. It works fine from a terminal, using the following invocation: ../9vx.Linux -g -u glenda where -g is the option to run sans GUI. This has one or two complications. There is no way to interrupt or kill the foreground process. Instead, ctrl-c interrupts 9vx itself. Anyway, I managed to get an emulated Plan 9 system up and running. Both ed and "sam -d" work well for editing text.
-- Chris