[root@localhost etc]# tree /etc/systemd/system
/etc/systemd/system
├── basic.target.wants
│ ├── dnf-makecache.timer -> /usr/lib/systemd/system/dnf-makecache.timer
│ └── firewalld.service -> /usr/lib/systemd/system/firewalld.service
├── bluetooth.target.wants
│ └── bluetooth.service -> /usr/lib/systemd/system/bluetooth.service
├── dbus-org.bluez.service -> /usr/lib/systemd/system/bluetooth.service
├── dbus-org.fedoraproject.FirewallD1.service -> /usr/lib/systemd/system/firewalld.service
├── dbus-org.freedesktop.Avahi.service -> /usr/lib/systemd/system/avahi-daemon.service
├── dbus-org.freedesktop.ModemManager1.service -> /usr/lib/systemd/system/ModemManager.service
├── dbus-org.freedesktop.NetworkManager.service -> /usr/lib/systemd/system/NetworkManager.service
├── dbus-org.freedesktop.nm-dispatcher.service -> /usr/lib/systemd/system/NetworkManager-dispatcher.service
├── dbus-org.freedesktop.timedate1.service -> /usr/lib/systemd/system/timedatex.service
├── default.target -> /lib/systemd/system/graphical.target
├── display-manager.service -> /usr/lib/systemd/system/gdm.service
├── getty.target.wants
│ └──
getty@tty1.service -> /usr/lib/systemd/system/getty@.service
├── graphical.target.wants
│ ├── accounts-daemon.service -> /usr/lib/systemd/system/accounts-daemon.service
│ └── rtkit-daemon.service -> /usr/lib/systemd/system/rtkit-daemon.service
├── multi-user.target.wants
│ ├── abrt-ccpp.service -> /usr/lib/systemd/system/abrt-ccpp.service
│ ├── abrtd.service -> /usr/lib/systemd/system/abrtd.service
│ ├── abrt-oops.service -> /usr/lib/systemd/system/abrt-oops.service
│ ├── abrt-vmcore.service -> /usr/lib/systemd/system/abrt-vmcore.service
│ ├── abrt-xorg.service -> /usr/lib/systemd/system/abrt-xorg.service
│ ├── atd.service -> /usr/lib/systemd/system/atd.service
│ ├── auditd.service -> /usr/lib/systemd/system/auditd.service
│ ├── avahi-daemon.service -> /usr/lib/systemd/system/avahi-daemon.service
│ ├── chronyd.service -> /usr/lib/systemd/system/chronyd.service
│ ├── crond.service -> /usr/lib/systemd/system/crond.service
│ ├── cups.path -> /usr/lib/systemd/system/cups.path
│ ├── httpd.service -> /usr/lib/systemd/system/httpd.service
│ ├── mcelog.service -> /usr/lib/systemd/system/mcelog.service
│ ├── mdmonitor.service -> /usr/lib/systemd/system/mdmonitor.service
│ ├── ModemManager.service -> /usr/lib/systemd/system/ModemManager.service
│ ├── NetworkManager.service -> /usr/lib/systemd/system/NetworkManager.service
│ ├── nfs-client.target -> /usr/lib/systemd/system/nfs-client.target
│ ├── remote-fs.target -> /usr/lib/systemd/system/remote-fs.target
│ ├── rngd.service -> /usr/lib/systemd/system/rngd.service
│ └── vmtoolsd.service -> /usr/lib/systemd/system/vmtoolsd.service
├── printer.target.wants
│ └── cups.service -> /usr/lib/systemd/system/cups.service
├── remote-fs.target.wants
│ └── nfs-client.target -> /usr/lib/systemd/system/nfs-client.target
├── sockets.target.wants
│ ├── avahi-daemon.socket -> /usr/lib/systemd/system/avahi-daemon.socket
│ ├── cups.socket -> /usr/lib/systemd/system/cups.socket
│ ├── dm-event.socket -> /usr/lib/systemd/system/dm-event.socket
│ ├── iscsid.socket -> /usr/lib/systemd/system/iscsid.socket
│ ├── iscsiuio.socket -> /usr/lib/systemd/system/iscsiuio.socket
│ └── rpcbind.socket -> /usr/lib/systemd/system/rpcbind.socket
├── spamassassin.service.wants
│ └── sa-update.timer -> /usr/lib/systemd/system/sa-update.timer
├── spice-vdagentd.target.wants
│ └── spice-vdagentd.service -> /usr/lib/systemd/system/spice-vdagentd.service
├── sssd.service.d
│ └── journal.conf
├── sysinit.target.wants
│ ├── dmraid-activation.service -> /usr/lib/systemd/system/dmraid-activation.service
│ ├── iscsi.service -> /usr/lib/systemd/system/iscsi.service
│ ├── lvm2-lvmetad.socket -> /usr/lib/systemd/system/lvm2-lvmetad.socket
│ ├── lvm2-lvmpolld.socket -> /usr/lib/systemd/system/lvm2-lvmpolld.socket
│ ├── lvm2-monitor.service -> /usr/lib/systemd/system/lvm2-monitor.service
│ └── multipathd.service -> /usr/lib/systemd/system/multipathd.service
├── syslog.service -> /usr/lib/systemd/system/rsyslog.service
├── systemd-timedated.service -> /dev/null
├── timers.target.wants
│ └── unbound-anchor.timer -> /usr/lib/systemd/system/unbound-anchor.timer
└── vmtoolsd.service.requires
└── vgauthd.service -> /usr/lib/systemd/system/vgauthd.service
14 directories, 56 files
[root@localhost etc]#
donc d'après la ligne
display-manager.service -> /usr/lib/systemd/system/gdm.service
se serai gdm, mais alors pourquoi cela ne fonctionne pas ?
merci