To print information about your Linux system hardware, run this command.

 $ apt-get install lshw

lshw

[email protected]:/# lshw -short
H/W path        Device      Class      Description
==================================================
                            system     Computer
/0                          bus        Motherboard
/0/0                        memory     3020MiB System memory
/0/1                        processor  Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz
/0/2                        processor  Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz
/0/100                      bridge     440FX - 82441FX PMC [Natoma]
/0/100/1                    bridge     82371SB PIIX3 ISA [Natoma/Triton II]
/0/100/1.1                  storage    82371SB PIIX3 IDE [Natoma/Triton II]
/0/100/1.2                  bus        82371SB PIIX3 USB [Natoma/Triton II]
/0/100/1.2/1    usb1        bus        UHCI Host Controller
/0/100/1.2/1/1              input      QEMU USB Tablet
/0/100/1.3                  bridge     82371AB/EB/MB PIIX4 ACPI
/0/100/2                    display    GD 5446
/0/100/3        eth0        network    Virtio network device
/0/100/4                    storage    Virtio SCSI
/0/100/5                    generic    Virtio memory balloon
/0/3            scsi2       storage
/0/3/0.0.0      /dev/sda    disk       257GB SCSI Disk
/0/3/0.0.0/1    /dev/sda1   volume     9748KiB data partition
/0/3/0.0.0/2    /dev/sda2   volume     3899MiB Linux swap volume
/0/3/0.0.0/3    /dev/sda3   volume     236GiB EXT4 volume
/0/4            scsi1       storage
/0/4/0.0.0      /dev/cdrom  disk       DVD reader

lscpu

[email protected]:/# lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    1
Socket(s):             2
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 63
Model name:            Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz
Stepping:              2
CPU MHz:               2596.988
BogoMIPS:              5193.97
Hypervisor vendor:     KVM
Virtualization type:   full
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              25600K
NUMA node0 CPU(s):     0,1

lsblk

[email protected]:/# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0   240G  0 disk
|-sda1   8:1    0   9.5M  0 part
|-sda2   8:2    0   3.8G  0 part [SWAP]
`-sda3   8:3    0 236.2G  0 part /
sr0     11:0    1  1024M  0 rom