What is the purpose of the command udevadm monitor?

A. It listens to kernel events produced by a udev rule and print information to the console.
B. It monitors the /dev directory for new devices.
C. It monitors the udev process and prints performance statistics to the console.
D. It communicates with D-Bus to setup new devices.


「udevadm」是udev的管理工具。「udevadm monitor」指令可以用來監聽udev的相關事件,並且把事件的相關資訊印在終端機上。因此答案是選項「A」。