[Help-gsl] Seed for RNG

[Johan van der Walt]

I got my little code going for generating random numbers using the GSL 
routines. Works fine. I now want to use a different seed every time I run 
the code. But I don't want to enter a new seed on the command line like 
this
     $ GSL_RNG_TYPE="taus" GSL_RNG_SEED=123 ./a.out
every time I run the code.

How can I set the seed in the code?

Johan