linux如何查看虚拟机使用情况（下如何检查服务器是虚拟机）

centos: 物理机：[root@db01 ~]# dmidecode |grep -A16 "System Information$"System Information Manufacturer: LENOVO Product Name: Lenovo System x3850 X6 Version: 09 Serial Number: J3xxxx UUID: 0xxB2E85-26xx-E711-A390-02E0EC431C8A Wake-up Type: Reserved SKU Number: none Family: System XHandle 0x0074, DMI type 2, 17 bytesBase Board Information Manufacturer: LENOVO Product Name: 00YA700 Version: E63448-400 Serial Number: xxxxxx Asset Tag: Base Board Asset Tag[root@db01 ~]#xen 虚拟机:[root@dg ~]# dmidecode |grep -A16 "System Information$"System Information Manufacturer: Xen Product Name: HVM domU Version: 4.7.1-1.9 Serial Number: 9d12fe08-88d0-dab5-21ac-b4294e79ccf1 UUID: 9D12FE08-87D0-DAB5-31AC-B4294E79CCF1 Wake-up Type: Power Switch SKU Number: Not Specified Family: Not SpecifiedHandle 0x0300, DMI type 3, 13 bytesChassis Information Manufacturer: Xen Type: Other Lock: Not Present Version: Not Specified Serial Number: Not Specified[root@dg ~]#VMware虚拟机：[root@dbserver ~]# dmidecode |grep -A16 "System Information$"System Information Manufacturer: VMware, Inc. Product Name: VMware Virtual Platform Version: None Serial Number: VMware-56 4d 53 25 bb 20 6c be-83 27 e2 c2 31 c3 02 1f UUID: 25534d56-20bb-be6c-8327-e2c231c3021f Wake-up Type: Power Switch SKU Number: Not Specified Family: Not SpecifiedHandle 0x0002, DMI type 2, 15 bytesBase Board Information Manufacturer: Intel Corporation Product Name: 440BX Desktop Reference Platform Version: None Serial Number: None Asset Tag: Not Specified[root@dbserver ~]#麒麟： VMWARE虚拟机：zhengquan@zhengquan-vmwarevirtualplatform:~/桌面$ sudo dmidecode |grep -i "system information" -A16System Information Manufacturer: VMware, Inc. Product Name: VMware Virtual Platform Version: None Serial Number: VMware-56 4d fe 83 cb a6 6e 6c-f5 cb 1d ba 10 46 74 37 UUID: 83fe4d56-a6cb-6c6e-f5cb-1dba10467437 Wake-up Type: Power Switch SKU Number: Not Specified Family: Not SpecifiedHandle 0x0002, DMI type 2, 15 bytesBase Board Information Manufacturer: Intel Corporation Product Name: 440BX Desktop Reference Platform Version: None Serial Number: None Asset Tag: Not Specified