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2.3. 检查 NetworkManager 的状态

检查 NetworkManager 是否在运行:
~]$ systemctl status NetworkManager
NetworkManager.service - Network Manager
   Loaded: loaded (/lib/systemd/system/NetworkManager.service; enabled)
   Active: active (running) since Fri, 08 Mar 2013 12:50:04 +0100; 3 days ago
请注意,当 NetworkManager 没有运行时,systemctl status 命令会显示 Active: inactive (dead)