Essential Linux Commands to Inspect Hardware Details

1. lshw – List hardware information

The lshw command provides a detailed inventory of all hardware components, including CPU, memory, disks, and network adapters. It must be run with super‑user privileges: sudo lshw The output contains manufacturer, model, driver details, and more, which can be scrolled through to examine the full hardware profile.

2. lscpu – View CPU details

lscpu

displays architecture, CPU model, core count, thread count, and other CPU characteristics without requiring elevated permissions. lscpu The command is useful for quickly checking the processor’s basic specifications.

3. free – Check memory usage

The free command reports total, used, and available memory. Using the -m option shows the values in megabytes for easier interpretation: free -m The output also includes buffers and cache information.

4. df – Inspect disk space

df

reports filesystem disk usage. The -h flag formats the sizes in a human‑readable way (e.g., GB, MB): df -h This command helps identify which mount points are consuming space.

5. lspci – List PCI devices

lspci

enumerates PCI devices such as graphics cards, network cards, and sound cards, showing device IDs, manufacturers, and models. No admin rights are required.

lspci

6. lsusb – List USB devices

lsusb

displays information about USB devices attached to the system, including vendor, product name, and device ID. It also runs without elevated privileges: lsusb These commands together provide a quick and comprehensive view of a Linux system’s hardware, useful for troubleshooting, capacity planning, and performance tuning.