All clients are version 4.0

Code:
Folding@home Version 4.00
Usage:   FAH4Console.exe [-option1] [-option2] ...

Options:
  -config      Configure user information
  -configonly  Configure user information, then exit
  -queueinfo   Get information on queued work units
  -delete x    Delete item #x from work queue
  -send x      Send result #x to server. Use x=all to send all results
  -verbosity x Sets the output level, from 1 to 9 (max). The default is 3
  -pause       Pause after finishing & trying to send current unit
  -oneunit     Exit after completing one unit
  -forceasm    Force core assembly optimizations to be used if available
  -forceSSE    Force SSE use (on every unit regardless of success) if available
  -advmethods  Use new advanced scientific cores and/or work units if available
  -service     Run in service mode (for programs such as firedaemon)
  -local       Use configuration files from local directory
Haven't tried the linux client as of yet but have the windows console running with wine and Gentoo linux