linux 下查看主板、CPU、内存、硬盘等信息

1. 查看主板信息：

dmidecode |grep -A16 "System Information$"

2. 查看cpu信息：

CPU总核数 = 物理CPU个数 * 每颗物理CPU的核数 

总逻辑CPU数 = 物理CPU个数 * 每颗物理CPU的核数 * 超线程数

查看CPU信息（型号）
[root@esggy-clu-n003 ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
     24  Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz

# 查看物理CPU个数
[root@esggy-clu-n003 ~]# cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
2

# 查看每个物理CPU中core的个数(即核数)
[root@esggy-clu-n003 ~]# cat /proc/cpuinfo| grep "cpu cores"| uniq
cpu cores       : 6

# 查看逻辑CPU的个数
[root@esggy-clu-n003 ~]# cat /proc/cpuinfo| grep "processor"| wc -l
24

3. 查看内存信息：（需要安装rpm -qa|grep dmidecode）

查看服务器型号、序列号：
[root@esggy-clu-n003 ~]# dmidecode|grep "System Information" -A9|egrep  "Manufacturer|Product|Serial"  
        Manufacturer: Dell Inc.
        Product Name: PowerEdge R720
        Serial Number: 9NLH422

Linux 查看内存的插槽数,已经使用多少插槽.每条内存多大：
[root@esggy-clu-n003 ~]# dmidecode|grep -A5 "Memory Device"|grep Size|grep -v Range
        Size: 16384 MB
        Size: 16384 MB
        Size: 16384 MB
        Size: 16384 MB
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: 16384 MB
        Size: 16384 MB
        Size: 16384 MB
        Size: 16384 MB
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed
        Size: No Module Installed

Linux 查看内存的频率：
[root@esggy-clu-n003 ~]# dmidecode|grep -A16 "Memory Device"|grep 'Speed'
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown
        Speed: Unknown

在linux查看内存型号的命令：
dmidecode -t memory

查看主板型号：
dmidecode |grep -A16 "System Information$"

内存槽及内存条：
dmidecode |grep -A16 "Memory Device$"

硬盘：
fdisk -l
smartctl -a /dev/sda

网卡：
mii-tool

4. 查看硬盘信息：

[root@esggy-clu-n003 ~]# fdisk -l | grep "Disk /dev/sd"
Disk /dev/sdb: 1999.8 GB, 1999844147200 bytes
Disk /dev/sdc: 1999.8 GB, 1999844147200 bytes
Disk /dev/sda: 1999.8 GB, 1999844147200 bytes
Disk /dev/sde: 1999.8 GB, 1999844147200 bytes
Disk /dev/sdf: 1999.8 GB, 1999844147200 bytes
Disk /dev/sdg: 1999.8 GB, 1999844147200 bytes
Disk /dev/sdd: 1999.8 GB, 1999844147200 bytes
[root@esggy-clu-n003 ~]# fdisk -l | grep 1999.8 | wc -l
7