Orca is strictly a graphical screen reader, but there are options for getting a screen reader up and running in a command-line only environment.
Probably the two most widely used options are espeakup and Fenrir. espeakup acts as a bridge between the speakup kernel module and the espeak or espeak-ng speech synthesizer, and I believe is configured by default on Debian systems that were installed with the talking version of the Debian Installer that didn't pick a desktop environment at the choose software stee. This does require that your distro's kernel comes with the espeak module, which not all kernels do(though this might have improved in the last couple of years). Fenrir is written in python and runs entirely in userland, allowing it to run on systems that lack the espeak kernel module. Some lesser used options nclude: speechdup, which is similar to espeakup, but bridges the speakup module to the Speech Dispatcher speech server, theoretically allowing the module to be used with any speech synth that has a speech dispatcher module. emacspeak, a screenreader built for emacs. yasr(yet another screen reader), which I know nothing about. SBL, which is what I personally use for CLI screen reading, but which is, as far as I know, only packaged for OpenSuse and Knoppix. And while not a screen reader per se, brltty does allow one to use Braille in the console. I can't provide much advice in setting any of these up, but hopefully the names will be enough for you to find further information.
