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ParallelPort Control Made Easy - parashell allows control of a PC parallelport (input and output) with simple command line arguments. The simplicity of these programs make it very easy to use in scripts. Control stepper motors, Relays, LEDs, etc...
Input/output (IO) C library exposing a common API for real mode and permission-restricted access to parallelport under Windows, Linux and MS-DOS operative systems. It also allows pin-by-pin port access.
ParallelPort Eprom Programmer contains a GNU/Linux driver that
controls the eprom programmer throught the parallelport and a tool
which allows reading and writing eproms.