RN generators Seed

[Maura Edeweiss Monville]

I'm currently using a RNG from the GNU Scietific Library in my simulation
I need to rerun my simulation many times with different seeds.
A friend of mine states the following:
"You can use the final random seed of a run as the starting random seed of
the next run (as you probably know, the random generators usually start
with a seed and then modify it in the process of generating random
numbers, so essentially the seed becomes a random number itself)"
I wonder how the final seed value can be obtained when using GSL Random  
Number Generators .... I only found the possibility to read and save the 
RNG "status". I do not know the relation between the RNG "status" and the
RNG "seed" ...     Can anyone help in this regards ?

Thank you
Maura