文件操作 - dnf-system-upgrade.service
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文件: /lib/systemd/system/dnf-system-upgrade.service
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[Unit] Description=System Upgrade using DNF ConditionPathExists=/system-update Documentation=http://www.freedesktop.org/wiki/Software/systemd/SystemUpdates DefaultDependencies=no Requires=sysinit.target After=sysinit.target systemd-journald.socket system-update-pre.target Before=shutdown.target system-update.target OnFailure=dnf-system-upgrade-cleanup.service [Service] # We are done when the script exits, not before Type=oneshot # Upgrade output goes to journal and on-screen. StandardOutput=journal+console ExecStart=/usr/bin/dnf system-upgrade upgrade [Install] WantedBy=system-update.target
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