Edit file File name : atopacct.service Content :[Unit] Description=Atop process accounting daemon Documentation=man:atopacctd(8) After=syslog.target Before=atop.service [Service] Type=forking PIDFile=/var/run/atopacctd.pid ExecStartPre=/bin/sh -c 'if systemctl -q is-active acct psacct; then echo "Process accounting already in use by (ps)acct"; exit 1; fi' ExecStart=/usr/sbin/atopacctd [Install] WantedBy=multi-user.target Save