$ $SG_TEST_EXENV ${bindir:=.}/s4u-actor-create
> [Tremblay:sender1:(1) 0.000000] [s4u_actor_create/INFO] Hello s4u, I have something to send
$ $SG_TEST_EXENV ${bindir:=.}/s4u-actor-create
> [Tremblay:sender1:(1) 0.000000] [s4u_actor_create/INFO] Hello s4u, I have something to send