[Help-glpk] Dual variables as result from a LP solver

[HBuesching04]

Hi subscribers,

I want to solve several hundred LPs to get the results of the dual 
variables.
Naturally I could do some coding within GLPK, but I don't want to 
reinvent the wheel. Has someone done this? 
An alternative would be to convert an original problem to the dual 
problem. Does someone know a free program, who can handle this?

All suggestion are welcomed,
Harald.