What command will show detailed information about devices connected to a Linux system?

The command that shows detailed information about devices connected to a Linux system is udevadm info. This command is part of the udev system, which is responsible for managing device nodes in the /dev directory, handling device events, and providing information about devices.

When you use udevadm info with a specific device file or device path, it retrieves and displays comprehensive details, including attributes like the device's hardware ID, driver information, and other characteristics that can help in understanding how the device is recognized by the Linux kernel. It provides insights into the udev properties and relations between various devices, which is crucial for troubleshooting and system configuration.

In contrast, other commands listed serve specialized purposes. For instance, lsusb primarily lists USB devices and provides basic information, while lspci focuses on PCI devices and displays information about those devices, albeit with less detail about properties compared to udevadm. The fdisk -l command is used for listing partition information on storage devices, which does not encompass the broader details about all connected hardware devices. Overall, udevadm info is the most suitable choice for obtaining extensive information about connected devices.