pipe -> lua -> pipe ???

[meino.cramer@...]

Hi,

on a embedded system, which 'harddisc' is flash memory and
which runs Gentoo Linux I want to implement a typical Unix-like
filter, which reads data from stdin, process them and output the 
result to stdout. 
The data originates from a program called gpspipe (which in turn is
part of the gpsd package) and is given in realtime.

How can I implement this "read from stdin and write to stdout"-thingy 
without using files (I dont want to use the flash due to the wear-out
problems) ?

Best regards,
mcc

PS: The embedded system runs
Lua 5.1.5  Copyright (C) 1994-2012 Lua.org, PUC-Rio