Check common information about Linux system

In this post, I summarize a bunch of common command line tools for checking common information about your Linux system, including hardware architecture, CPU, Linux distribution, peripherals such PCI, USB and block devices, etc.

• arch: print machine hardware name. e.g. x86_64

• uname: print system information, which includes

  • kernel name e.g. Linux

  • kernel release e.g. 4.19.0-18-amd64

  • machine hardware name e.g. x86_64

  • operating system e.g. GNU/Linux

  • network node hostname

  • processor type

  • hardware platform

• hostname: display the hostname

• lscpu: display CPU information

• lsmem: list the ranges of available memory with their online status

• xrandr: print the information of connected screens and their supported modes

• lspci: list all PCI devices

• lsusb: list USB devices

• lsb_release: print LSB (Linux Standard Base) and distribution-specific information

  • version of LSB

  • distributor ID e.g. Debian

  • release number e.g. 10

  • code name e.g. buster

• lsmod: print the loaded kernel modules

• lsblk: list block devices