[Unit] Description=Dropbear SSH Key Generator Before=dropbear.service ConditionPathExists=!/etc/dropbear/dropbear_rsa_host_key ConditionPathExists=!/etc/dropbear/dropbear_dss_host_key ConditionPathExists=!/etc/dropbear/dropbear_ecdsa_host_key [Service] Type=oneshot ExecStart=/usr/bin/dropbearkey -t rsa -f /etc/dropbear/dropbear_rsa_host_key ExecStart=/usr/bin/dropbearkey -t dss -f /etc/dropbear/dropbear_dss_host_key ExecStart=/usr/bin/dropbearkey -t ecdsa -f /etc/dropbear/dropbear_ecdsa_host_key RemainAfterExit=yes