CentOS 7 /RHEL 7: 3 Useful Linux Commands To Display Hardware Information
How Do I display hardware information about PCI buses, usb buses, and cpu architechture in the system and devices connected to them under centos 7 or rhel 7? How to check the hardware information of CPU device? How to view the information about PCI buses devices under linux operating system?
This post will show you how to display device information for 4 variety of devices.
#1 lspci – used to list all PCI devices on your system, and shows a brief list of devices.
#2 lsusb – will list all USB devices
#3 lscpu – used to display information about the CPU architechture
CentOS 7 Display Hardware Information Of PCI devices
To display information about all PCI buses and devices attached to them, issue the following command:
lspci
outputs:
[root@osetc~]# lspci 00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01) 00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01) 00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 08) 00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) 00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08) 00:07.7 System peripheral: VMware Virtual Machine Communication Interface (rev 10) 00:0f.0 VGA compatible controller: VMware SVGA II Adapter 00:10.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 01) 00:11.0 PCI bridge: VMware PCI bridge (rev 02) 00:15.0 PCI bridge: VMware PCI Express Root Port (rev 01) 00:15.1 PCI bridge: VMware PCI Express Root Port (rev 01) 00:15.2 PCI bridge: VMware PCI Express Root Port (rev 01) 00:15.3 PCI bridge: VMware PCI Express Root Port (rev 01) 00:15.4 PCI bridge: VMware PCI Express Root Port (rev 01) 00:15.5 PCI bridge: VMware PCI Express Root Port (rev 01) 00:15.6 PCI bridge: VMware PCI Express Root Port (rev 01) 00:15.7 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.0 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.1 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.2 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.3 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.4 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.5 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.6 PCI bridge: VMware PCI Express Root Port (rev 01) 00:16.7 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.0 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.1 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.2 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.3 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.4 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.5 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.6 PCI bridge: VMware PCI Express Root Port (rev 01) 00:17.7 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.0 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.1 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.2 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.3 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.4 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.5 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.6 PCI bridge: VMware PCI Express Root Port (rev 01) 00:18.7 PCI bridge: VMware PCI Express Root Port (rev 01) 02:00.0 USB controller: VMware USB1.1 UHCI Controller 02:01.0 Ethernet controller: Intel Corporation 82545EM Gigabit Ethernet Controller (Copper) (rev 01) 02:02.0 Multimedia audio controller: Ensoniq ES1371 / Creative Labs CT2518 [AudioPCI-97] (rev 02) 02:03.0 USB controller: VMware USB2 EHCI Controller
To display more detailed information for each PCI device, passing “-v” option to “lspci” command,type:
lspci -v
outputs:
[root@osetc~]# lspci -v 00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01) Subsystem: VMware Virtual Machine Chipset Flags: bus master, medium devsel, latency 0 Kernel driver in use: agpgart-intel 00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01) (prog-if 00 [Normal decode]) Flags: bus master, 66MHz, medium devsel, latency 0 Bus: primary=00, secondary=01, subordinate=01, sec-latency=64 00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 08) Subsystem: VMware Virtual Machine Chipset Flags: bus master, medium devsel, latency 0
CentOS 7 Display Hardware Information for all USB devices
To display information for all USB devices on your system, issue the following command:
lsusb
outputs:
[root@osetc~]# lsusb Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
To display more detailed information for each USB device, using “-v” option to “lsusb” command, type:
lsusb -v
outputs:
[root@osetc~]# lsusb -v Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0e0f VMware, Inc. idProduct 0x0003 Virtual Mouse bcdDevice 1.03 iManufacturer 1 VMware iProduct 2 VMware Virtual USB Mouse iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 34 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 1 VMware bmAttributes 0xc0 Self Powered MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 ....
CentOS 7 Display Hardware Information About The CPU Architecture
To display information about CPUs that are attached in the system, including CPU caches and cache sharing, family, model, bogoMIPS, byte order, and stepping, issue the following command:
lscpu
outputs:
[root@osetc~]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Thread(s) per core: 1 Core(s) per socket: 1 Socket(s): 1 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 60 Model name: Intel(R) Core(TM) i5-4690 CPU @ 3.50GHz Stepping: 3 CPU MHz: 3491.960 BogoMIPS: 6983.92 Hypervisor vendor: VMware Virtualization type: full L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 6144K NUMA node0 CPU(s): 0
done….
