Quizas Quizas Quizas-Ibrahim Ferrer & Omara Portuondo
VBoxHeadless – Running Virtual Machines with VirtualBox 5.1 on a headless Ubuntu 16.04 LTS Server
Headless Mode for Virtual Machines of VirtualBox – Thomas-Krenn-Wiki
Starting and Connecting to the Virtual Machine
After the successful installation of VRDP, a virtual machine can be started in headless mode. The name of the virtual machine will be given in the first step:
~$ VBoxManage list vms
"ubuntu-server" {763d57b9-8eef-4572-8e71-f33fea89e950}
In this example, there is a virtual machine named “ubuntu-server”. The subsequent number is its UID. Headless mode can be activated afterwards in one of two manners:
~$ VBoxHeadless -s ubuntu-server
Oracle VM VirtualBox Headless Interface 4.1.8
(C) 2008-2011 Oracle Corporation
All rights reserved.
VRDE server is listening on port 3389.
or:
~$ VBoxManage startvm ubuntu-server --type headless
Waiting for VM "ubuntu-server" to power on...
VM "ubuntu-server" has been successfully started.
The virtual machine will now be running, however display output will not be shown. Instead, one connects to the machine through RDP or SSH (assuming that corresponding network and SSH configurations) exist.
SSH
~$ ssh tktest@192.168.56.101
In this example, the virtual machine has one Host-only-Adapter, which will automatically get an IP address from the DHCP server when the virtual machine is started. For that reason, the running SSH server for the virtual machine can be reached without any problems. This connection will also work through SSH, if VRDE has not been activated for the virtual machine.
RDP
Connection to a virtual machine via RDP will only work when VRDE has been activated for the virtual machine. After that, any RDP client can be used for connecting to the local host or using the IP address for the host on the virtual machine:
~$ VBoxHeadless -s ubuntu-server
Oracle VM VirtualBox Headless Interface 4.1.8
(C) 2008-2011 Oracle Corporation
All rights reserved.
VRDE server is listening on port 3389.
rdesktop localhost
Source: Headless Mode for Virtual Machines of VirtualBox – Thomas-Krenn-Wiki
Managing Oracle VM VirtualBox from the Command Line
VirtualBox 5.2 on Ubuntu 16.04 LTS Server (Headless) | Website for Students
VBoxManage list extpacks
Source: VirtualBox 5.2 on Ubuntu 16.04 LTS Server (Headless) | Website for Students
Hans von Bülow
Hans Guido Freiherr von Bülow (8 January 1830 – 12 February 1894) was a German conductor, virtuosopianist, and composer of the Romantic era. One of the most famous conductors of the 19th century, his activity was critical for establishing the successes of several major composers of the time, especially Richard Wagnerand Johannes Brahms. Alongside Carl Tausig, Bülow was perhaps the most prominent of the early students of Hungarian virtuoso pianist, conductor and composer Franz Liszt—therein performed the first public performance of Liszt’s Sonata in B minor in 1857. He became acquainted with, fell in love and eventually married Liszt’s daughter Cosima, who later left him for Wagner. Noted for his interpretation of the works of Ludwig van Beethoven, he was one of the earliest European musicians to tour the United States.
Burleske
Burleske in D Minor for Piano and Orchestra by Wiener Philharmoniker
How to Install VirtualBox Guest Additions in Ubuntu
sudo apt install build-essential dkms linux-headers-$(uname -r)
sudo mount /dev/sr0 /media/cdrom
cd /media/cdrom
sudo ./VBoxLinuxAdditions.ru
Dick Van Dyke
Vertical Markets vs. Horizontal Markets
For a company, deciding who to try to sell its products to is a big choice. Sometimes, the products themselves dictate the customer and ultimately the market a company participates in. In this lesson we will learn about two main markets, vertical and horizontal.
A First Look at Markets
Meet Tonya! Tonya has just started her own business selling flowers. Because she loves to garden she decided that she could make a career out of her passion. But while she is a very skilled gardener and very knowledgeable about a wide variety of plants, her business skills are basic at best. She knows that if she is going to be successful, she needs to reach out to those who would be most interested in her products. But where does she begin? Who is her target consumer? What type of market would work best for her business? Come along as Tonya learns all about markets in order to excel at her new business.
Foundation Definitions
Before Tonya can decide which market to target, she needs to learn about her options. Basically, there are two major markets that she can pursue. First there is a horizontal market. A horizontal market is the more basic of the two markets in that it allows a business to market to a wide variety of potential customers, regardless of what type of industry or business it is in. For example, paper would be a product that could be marketed horizontally. People in a wide variety of industries use paper. Paper is not a specialty product that only those in a special industry would use.
A vertical market is a more specific market that focuses on the needs of a certain group of individuals in a certain industry. In other words, a vertical market prioritizes specialties in specific markets. For example, a bank that specializes in agricultural loans would be a vertical market. Only those who are looking for money to fund their agricultural needs would be in the market for an agricultural loan. The loan is for a specific group of people in a specific industry.
Advantages of Both Markets
So why would Tonya pick one market over the other? What do horizontal markets offer that vertical markets do not and vice versa? Below you will find the advantages of choosing each market.
Advantages of Vertical Markets
1. Specialized products – With vertical markets, businesses know that they can provide products that are specialized to certain companies and their needs. This makes those companies happy because they have a producer that can provide them with the specialty product they are looking for. For Tonya, this could be beneficial because she would be able to market to customers that are specifically looking for the special plants she grows.
2. Greater concentration – Companies that specialize in one particular product can spend all of their time focusing on that product. A company that creates multiple products has to spread its focus amongst all of the products. However, a company with just one product can put all of its time, energy, and money into the success of that product. Tonya knows that if she chose a vertical market, she would be able to sell those flowers that are special to her and that she excels at growing.
3. Competition – With a more specialized a product there are fewer companies producing the same product. For Tonya, if she decides to grow a rare breed of roses, she may have less competition because only a few other gardeners grow that specialty.
Source: Vertical Markets vs. Horizontal Markets | Study.com