virt-what
Copyright (C) 2008-2009 Red Hat Inc.
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This is a collection of scripts which you can use to work out what
sort of virtualization you are running inside.

Build:

  ./configure
  make

If you want to run it from the local directory, then you have to set
the PATH:

  PATH=.:$PATH virt-what

To install (usually as root):

  make install

also:

  make prefix=/usr install
  make DESTDIR=/tmp/somewhere install