vzlist                               # List running instances
vzlist -a                            # List all instances

vzctl stop <instance>
vzctl start <instance>
vzctl status <instance>

vzctl exec <instance> <command>      # Run a command

vzctl enter <instance>               # Get console

vzyum <instance> install <package>   # Install a package


# Change properties
vzctl set <instance> --hostname <hostname> --save
vzctl set <instance> --ipadd <IP> --save
vzctl set <instance> --userpasswd root:<password> --save