What are the purposes of the lspci command in Linux?

The lspci command is used to display information about all PCI (Peripheral Component Interconnect) devices on a computer. Here are some common uses of the lspci command:

1. List all PCI devices: The lspci command can provide detailed information regarding all PCI devices on the computer, including device ID, manufacturer, and model.
2. List PCI devices of a specified type: You can use the lspci command to filter out specific types of PCI devices, such as network adapters, sound cards, etc.
3. You can list the IRQ and I/O ports of devices by using the lspci command, which displays the Interrupt Requests (IRQ) and Input/Output (I/O) ports of each PCI device.
4. Check device drivers: The lspci command can display the driver being used by each PCI device.
5. Display the bus information of devices: The lspci command can show the bus number, device number, and function number of each PCI device, and can be used for hardware troubleshooting and debugging.

In conclusion, the lspci command in the Linux system is used to view and identify information about PCI devices, which can help users understand computer hardware configurations, device driver status, and troubleshooting.