Lines of node_exporter.service from check-in 7ccc41d896 that are changed by the sequence of edits moving toward check-in 8f80b79392:

                         1: # vim:ft=make:
                         2: 
7ccc41d896 2019-10-20    3: DAEMON_node_exporter_COMMAND?=node_exporter --web.listen-address=${DAEMON_node_exporter_LISTEN_ADDRESS} --collector.textfile.directory=${DAEMON_node_exporter_TEXTFILE_DIR}
                         4: DAEMON_node_exporter_ENABLE?=no
                         5: DAEMON_node_exporter_LISTEN_ADDRESS?=:9100
                         6: DAEMON_node_exporter_TEXTFILE_DIR?=/var/tmp/node_exporter
                         7: DAEMON_node_exporter_USER?=nobody
                         8: DAEMON_node_exporter_GROUP?=nobody
                         9: 
                        10: node_exporter: _daemon
                        11: .if !exists(DAEMON_node_exporter_TEXTFILE_DIR)
                        12: 	install -d -o ${DAEMON_node_exporter_USER} -g ${DAEMON_node_exporter_GROUP} -m1755 ${DAEMON_node_exporter_TEXTFILE_DIR}
                        13: .endif