- OS: Windows 10 64-bit. CPU: Intel Core i5-2400 3.1 GHz or AMD FX-6300 3.5 GHz. RAM: 6 GB System Memory. GPU RAM: 2 GB Video Memory. GPU: Nvidia GeForce GTX 760 2GB.
- Opinion by Brett Robinson, Special to CNN (CNN)— Forget the forbidden fruit logo and the cult of Apple jokes. The legacy of Steve Jobs is anything but religious. Apple was conceived in the heady days of the counterculture movement.
This question may be obvious to some, but I searched all over the internet and couldn't find the answer. I was following an install guide on Strut. How do I stop the Grunt task? I'm running Windows 7.
Introduction
VirtualBox is according to developers:
VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL). See “About VirtualBox” for an introduction.
And according to Wikipedia:
Oracle VM VirtualBox is an x86 virtualization software package, originally created by software company innotek GmbH, purchased by Sun Microsystems, and now developed by Oracle Corporation as part of its family of virtualization products. It is installed on an existing host operating system; within this application, additional guest operating systems, each known as a Guest OS, can be loaded and run, each with its own virtual environment.
Supported host operating systems include Linux, Mac OS X, Windows XP, Windows Vista, Windows 7, Solaris, and OpenSolaris; there is also a port to FreeBSD (only OSE version). Supported guest operating systems include a small number NetBSD versions and various versions of Windows, Linux, DragonFlyBSD, FreeBSD, OpenBSD, OS/2 Warp, Solaris, OpenSolaris, Haiku, Syllable, ReactOS, and SkyOS.
From this, we may know that it is a powerful and useful tool, for those trying to test new Operating Systems, or try new configurations on Known Operating Systems. I use it a lot to test new Linux distribution, without the need to install them on my Hard Disk.
Another great use for it, is to have separated servers on the same hardware just to improve security, I mean: Why to have DNS server, FTP server, Web server and all others on the same environment, where an attack to one of these server may compromise all the others, you can install Linux on a good Hardware, and VirtualBox on it, and three or four different virtual machines running Linux to have all those functions mentioned before on different Virtual Machines, thus increasing the security of your configuration.
But, enough talking about this, this will be material of another article, let’s focus on how to manage VirtualBox from the command line, as you usually will do it from the GUI.
List virtual machines from command line
The command we will use for this is VBoxManage and different sub-commands it has, to list the virtual machines installed run:
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If you specify -l then, you will get a detailed information about each one of those.
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How to start virtual machines from command line
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Now that you know which virtual machines are already installed, let’s see how to start them.
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or
You can add those commands to your startup scripts, so virtual machines are started when you to boot your primary Linux server.
How to stop a virtual machine from command line
Now we know how to start virtual machines, we need to know how to stop them, there are some options.
Pause the virtual machine
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This will just put the virtual machine on hold, until un-paused.
Resume the paused virtual machine
Reset -restart- the virtual machine
This will close the virtual machine, and restart immediately, you unsaved data on the virtual machine will not be saved, and will be lost! you have been warned.
Poweroff or shut down the virtual machine
This will poweroff the virtual machine, and once again any unsaved data will be lost.
Stop virtual machine, and save data
This will save current state of the virtual machine and stop it, I think of this more or less, like hibernate the virtual machine.
Create a new virtual machine
You can also create new virtual machines from command line:
This create a new virtual machine, with default options.
Change Settings on the virtual machine from command line
Now we have a new virtual machine created, let’s change some of its default settings, like the allocated RAM:
Check the complete set of parameters
Conclusion
As you can see, VirtualBox is very flexible and fully managed from the command line, so it can be used on a Dedicated server, in a remote data center, and you may have all your virtual machines under control.
I’m not saying this is the best option to go for professional virtualization, but it is certainly a good one, and an easy one too.