units                  lj
atom_style        atomic

region total block -1 1 -1 1 -1 1
create_box 1 total

mass 1 1.0

pair_style lj/cut 1.0
pair_coeff * * 0 0

variable step equal step
variable seed equal ${SEED}
variable rand equal "random(0.0,1.0, v_seed)"
fix print all print 1 "${step} ${rand}" file rand.${SEED}.dat screen no
run 100