detects several virtualizations

 This Perl script tries to detect if it is run in a virtualization container.
 .
 In this version it is able to detect the following virtualization
 technologies:
  ARAnyM
  KVM
  lguest
  LXC
  OpenVZ/Virtuozzo
  QEMU
  UML
  VMware GSX, ESX, Workstation
  Virtual PC/Virtual Server
  VirtualBox
  Xen (para and non-para virtualized)
 .
 And much more.