On some systems /bin/sh is not bash but instead "dash" which is more lightweight but still a POSIX shell. Simfactory's run scripts usually are written with bash in mind so should use /bin/bash and not /bin/sh

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2545/some-of-simfactorys-run-scripts-use-bin-sh