Command option Sample:systemctl is-system-running

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systemctl is-system-running (see    Tails - monitor servers : http://tails.boum.org/blueprint/monitor_servers/
systemctl is-system-running 2>/dev/null)    packages/systemd - debian: systemd : http://sources.progress-linux.org/distributions/dschinn/packages/systemd/commit/@id=9c2f95ac25ab9fbd4deabf35ae0210e066868e74

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