Linux View System Hardware Information Summary (some examples Centoso for example)

1.cpu

#lscpu命令, the statistics for the CPU are viewed.

• Architecture:x86_64
  CPU Op-mode (s): 32-bit, 64-bit
  Byte Order:little Endian
  CPU (s): 4
  On-line CPU (s) list:0-3
  Thread (s) per core:1
  Core (s) per Socket:2
  Socket (s): 2
  NUMA node (s): 1
  Vendor Id:genuineintel
  CPU Family:6
  Model:42
  Stepping:7
  CPU mhz:3093.110
  bogomips:6186.22
  Hypervisor Vendor:vmware
  Virtualization Type:full
  L1D cache:32k
  L1i cache:32k
  L2 cache:256k
  L3 cache:6144k
  NUMA node0 CPU (s): 0-3

View/proc/cpuinfo, you can know each CPU information, such as the model of each CPU, the frequency and so on.

2. Memory

#free-M # View memory usage and swap area usage

Total used free shared buffers Cached

mem:3690 288 3401 0 15 119

-/+ buffers/cache:153 3536

swap:3951 0 3951

# Cat/proc/meminfo

#dmidecode-T Memory view hardware information

grep memtotal/proc/meminfo# View Total Memory

grep Memfree/proc/meminfo # Viewing the amount of free memory

Lsmod # List of loaded kernel modules

3. Disk

# LSBLK view hard disk with partition and

2. NAME maj:min RM SIZE RO TYPE mountpoint

4. SDA 8:0 0 60G 0 disk

6. ├─SDA1 8:1 0 500M 0 part/boot

8. └─sda2 8:2 0 59.5G 0 part

10. ├─vg_qdy-lv_root (dm-0) 253:0 0 50G 0 LVM/

12. ├─vg_qdy-lv_swap (dm-1) 253:1 0 3.9G 0 LVM [swap]

14. └─vg_qdy-lv_home (dm-2) 253:2 0 5.7G 0 lvm/home

16. Sr0 11:0 1 1024M 0 rom

#df-h # View each partition usage Du-sh # View the size of the specified directory

• Filesystem Size used Avail use% mounted on

• /dev/mapper/vg_qdy-lv_root 50G 3.7G 44G 8%/

• Tmpfs 1.9G 0 1.9G 0%/dev/shm

• /DEV/SDA1 485M 39M 421M 9%/boot

• /dev/mapper/vg_qdy-lv_home 5.6G 239M 5.1G 5%/Home

#fdisk-L # View all partition details

• disk/dev/sda:64.4 GB, 64424509440 bytes
  

• 255 heads, Sectors/track, 7832 cylinders

• Units = Cylinders of 16065 * 8225280 bytes

• Sector size (logical/physical): bytes/512 bytes

• I/O size (minimum/optimal): bytes/512 bytes

• Disk identifier:0x0000859f

• 
  

• Device Boot Start End Blocks Id System

• /DEV/SDA1 * 1 512000 Linux

• Partition 1 does not end on cylinder boundary.

• /dev/sda2 7833 62401536 8e Linux LVM

• 
  

• disk/dev/mapper/vg_qdy-lv_root:53.7 GB, 53687091200 bytes

• 255 heads, Sectors/track, 6527 cylinders

• Units = Cylinders of 16065 * 8225280 bytes

• Sector size (logical/physical): bytes/512 bytes

• I/O size (minimum/optimal): bytes/512 bytes

• Disk identifier:0x00000000

• ...... Omit below!

4. NIC Information

# Lspci | Grep-i ' ETH ' view NIC hardware information

# IFCONFIG-A View all network interfaces of the system

or #ip link Show

# ethtool eth0 View details of a network interface

5. Motherboard All hardware slots PCI information.

#lspci

A more detailed lspci-v or LSPCI-VV.

#lscpi-T Device tree

6. View BIOS Information

# DMIDECODE-T BIOS

7. View system uptime, number of users, load

#uptime

#cat/proc/loadavg # View system load disks and partitions

8. View the status of the attached partition

#mount | Column-t

9. View system load disks and partitions

# Cat/proc/loadavg

10. View all installed Packages

#rpm-qa

11. View All Processes

# PS-EF

12. View all listening ports

#netstat-LNTP

13. Check User and group information

#cut-D:-f1/etc/passwd # View System All users cat/etc/passwd |more display long system users and paging

#cut-D:-f1/etc/group # View system All Groups Cat/etc/group|more show long system all groups and pagination

14 Other infrequently used View information commands

Swapon-s # View all swap partitions

Iptables-l # View firewall settings

Hdparm-i/dev/hda # View disk parameters (for IDE devices only)

DMESG | grep IDE # View IDE device detection network at startup

Crontab-l # View the current user's scheduled tasks service

Chkconfig–list # List all system Services #

Chkconfig–list | grep on # Lists all started system services programs

Linux View System Hardware Information Summary (some examples Centoso for example)