/etc/systemd/system/multi-user.target.wants
Edit: /usr/lib/systemd/system/atd.service (222B)
[Unit]
Description=Job spooling tools
After=syslog.target systemd-user-sessions.service
[Service]
EnvironmentFile=/etc/sysconfig/atd
ExecStart=/usr/sbin/atd -f $OPTS
IgnoreSIGPIPE=no
[Install]
WantedBy=multi-user.target