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lang-bash
wait -n, not just await. This wait will return when any background process exits. This makes the script finish, and systemd kills the other processes in the control group as the unit stops.systemd. I am usingsysvinit. I did not specify this in my question, because I did not anticipate it would be relevant.wait -nis not in all shells, but some systems link sh to bash and that acceptswait -n, and otherwise bash is often available in distributions.