This is a python-based host software for reprap printers, in various forms.

Printrun consists of printcore, pronsole and pronterface, and a small collection of helpful scripts.

printcore.py is a library that makes writing reprap hosts easy
pronsole.py is an interactive command-line host software with tabcompletion goodness
pronterface.py is a graphical host software with the same functionality as pronsole

USING PRONTERFACE

To use pronterface, you need: 
python (ideally 2.6.x or 2.7.x), 
pyserial (or python-serial on ubuntu/debian), 
pyreadline (not needed on Linux) and
wxPython

Download and install the above, and start pronterface.py
Select the port name you are using from the first drop-down, select your baud rate, and hit connect.
Load an STL (see the note on skeinforge below) or GCODE file, and you can upload it to SD or print it directly.
The "monitor printer" function, when enabled, checks the printer state (temperatures, SD print progress) every 3 seconds.
The command box recognizes all pronsole commands, but has no tabcompletion.

If you want to load stl files, you need to put a version of skeinforge (doesn't matter which one) in a folder called "skeinforge".
The "skeinforge" folder must be in the same folder as pronterface.py

USING PRONSOLE

To use pronsole, you need: 
python (ideally 2.6.x or 2.7.x), 
pyserial (or python-serial on ubuntu/debian) and
pyreadline (not needed on Linux)

Start pronsole and you will be greeted with a command prompt. Type help to view the available commands.
All commands have internal help, which you can access by typing "help commandname", for example "help connect"

If you want to load stl files, you need to put a version of skeinforge (doesn't matter which one) in a folder called "skeinforge".
The "skeinforge" folder must be in the same folder as pronsole.py

USING PRINTCORE:

To use printcore you need python (ideally 2.6.x or 2.7.x) and pyserial (or python-serial on ubuntu/debian)
See pronsole for an example of a full-featured host, the bottom of printcore.py for a simple command-line 
sender, or the following code example:

p=printcore('/dev/ttyUSB0',115200)
p.startprint(data) # data is an array of gcode lines
p.send_now("M105") # sends M105 as soon as possible
p.pause()
p.resume()
p.disconnect()