root@hostmaster-laptop:~# vzctl set 1001 --name deb --nameserver "" --diskspace 2G:2G --save
Name deb assigned
Saved parameters for CT 1001

Starting the container.

root@hostmaster-laptop:~# vzctl start 1001
Starting container ...
Container is mounted
Adding IP address(es):
Setting CPU units: 1000
Configure meminfo: 65536
Set hostname:
File resolv.conf was modified
Container start in progress...
root@hostmaster-laptop:~# vzctl start 1001
Container is already running

Entering the container.

root@hostmaster-laptop:~# vzctl enter 1001
entered into CT 1001

Set ROOT password.

deb:/# passwd
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully

Checking kernel.

deb:/# uname -a
Linux 2.6.24-22- #1 SMP Fri Nov 14 13:55:04 UTC 2008 x86_64 GNU/Linux

It successfully login to GUEST OS. Notice that it use the same kernel as HOST OS. Different with Xen and virtualbox, where the OS is fully virtualize.