How do you reload the rules in udev?

To understand why reloading the rules in udev is accomplished with the command specified, it's important to look at how udev works and the purpose of the command itself.

Udev is a device manager for the Linux kernel that dynamically creates and removes device nodes in the /dev directory as hardware devices are added or removed. When you modify the udev rules (usually found in /etc/udev/rules.d/ or /lib/udev/rules.d/), those changes do not take effect until the rules are reloaded. The correct command to achieve this is udevadm reload-rules.

When you run udevadm reload-rules, you are instructing udev to re-read its rules configuration files from the specified directories. This is crucial because it ensures that any changes you've made to these files will be recognized and applied to dynamically manage device files based on the updated rules.

This command efficiently updates the user's current session with the latest rules to be applied to device management, making it essential for anyone modifying udev rules to know how to properly apply those changes. Other options listed do not accurately reflect the correct syntax or function relating to reloading udev rules.