检查VPS虚拟化类型

可以判断以下大多数虚拟架构，包括：VMware、Hyper-V、VirtualPC、VirtualBox、OpenVZ / Virtuozzo、Linux-VServer、UML、IBM PowerVM Lx86 Linux/x86 emulator、Hitachi Virtualization Manager (HVM) Virtage logical 、partitioning、IBM SystemZ、Parallels、Xen、QEMU/KVM

wget http://people.redhat.com/~rjones/virt-what/files/virt-what-1.12.tar.gz
tar zxvf virt-what-1.12.tar.gz
cd virt-what-1.12/
./configure
make && make install
virt-what

比较简单的方法：
apt-get install virt-what #debian/ubuntu安装
yum install virt-what #centos安装
virt-what #运行