Which command gives an overview of all the hardware and drivers in the system, including the ports used to talk to the CPU?

The command that provides an overview of all the hardware and drivers in the system, including the ports used to communicate with the CPU, is 'lspci.' This tool is specifically designed to list all PCI (Peripheral Component Interconnect) devices on the system, detailing their specifications and the drivers associated with each device. When executed, 'lspci' displays a comprehensive picture of the hardware components, such as graphics cards, network interfaces, and other peripherals, thereby offering insight into how these components are connected and managed by the system.

This command is particularly useful for troubleshooting hardware issues or ensuring that the correct drivers are installed for each device. The output includes information such as vendor IDs, device types, and other vital details that can help in managing the hardware efficiently.

In contrast, other commands serve different purposes. 'lsmod' displays the currently loaded kernel modules but does not provide hardware details. 'modprobe' is used to add or remove kernel modules but does not give an overview of hardware. 'ioping' is a tool for measuring disk I/O latency, focusing on performance testing rather than hardware details. Thus, 'lspci' stands out as the command tailored for reviewing hardware information in the system.