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Suspend Linux from command line

    dbus-send --system --print-reply --dest="org.freedesktop.UPower"  /org/freedesktop/UPower  org.freedesktop.UPower.Suspend

    dbus-send --system --print-reply --dest="org.freedesktop.UPower"  /org/freedesktop/UPower  org.freedesktop.UPower.Hibernate