[root@node1~]# dmidecode -t 查看支持的参数
dmidecode: option requires an argument -- 't'
Type number or keyword expected
Valid type keywords are:
bios
system
baseboard
chassis
processor
memory
cache
connector
slot

[root@node1~]# dmidecode -t system 或者 dmidecode -t 1
dmidecode 2.11
SMBIOS 2.7 present.

Handle 0x0100, DMI type 1, 27 bytes
System Information
Manufacturer: Dell Inc.
Product Name: PowerEdge R720xd
Version: Not Specified
Serial Number: FJ2SHY1
UUID: 4C4C4544-004A-3210-8053-C6C04F485931
Wake-up Type: Power Switch
SKU Number: SKU=NotProvided;ModelName=PowerEdge R720xd
Family: Not Specified