File grub2-once.service of Package grub2

[Unit]
Description=Restore grubenv
DefaultDependencies=no
After=local-fs.target
Before=sysinit.target shutdown.target
Conflicts=shutdown.target
ConditionPathIsReadWrite=/boot/grub2/grubenv

[Service]
Type=oneshot
ExecStart=-/usr/bin/grub2-editenv /boot/grub2/grubenv unset next_entry
ExecStartPost=-/usr/bin/systemctl disable grub2-once.service
StandardOutput=syslog

[Install]
WantedBy=sysinit.target