clean /tmp before running QChem on Hopper/Edison
clean /tmp before running QChem on Hopper/Edison

alberthxf/custodian,materialsproject/custodian,materialsproject/custodian,xhqu1981/custodian,davidwaroquiers/custodian,materialsproject/custodian,specter119/custodian,specter119/custodian,specter119/custodian