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How to setup headless Sun xVM VirtualBox on Ubuntu server

September 4, 2008 20 comments

The steps are not too difficult but I did have to find a few places for information. Search on the forum turn up nothing on this subject so hopefully this HOWTO would be helpful to someone out there.

Note: This is not using the OSE version.

Background:
VirtualBox has a very good GUI running on the host to manage guest OS. However when running a server, we typically do not want to run X on it. Fortunately VirtualBox has commandline tools to manage guest systems. It also provides the VirtualBox Remote Desktop Protocol (VRDP) to allow connection to the guest remotely.

Clarification of terms used:
Host – refers to the machine we are trying to install VirtualBox.
Guest – the VirtualBox guest system that is setup on the host.
Remote – the PC that we are working on to connect to the host via SSH.

This setup was done on a fresh install of Ubuntu Server 8.04 with openssh-server installed.

All the following steps are done by SSH into the host from a remote (I’m using Windows for now).

Read more…

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Google Chrome (BETA) for Windows

September 3, 2008 2 comments

Google Chrome is a browser that combines a minimal design with sophisticated technology to make the web faster, safer, and easier.

Google Chrome

Google Chrome

One box for everything
Type in the address bar and get suggestions for both search and web pages.

Thumbnails of your top sites
Access your favorite pages instantly with lightning speed from any new tab.

Shortcuts for your apps
Get desktop shortcuts to launch your favorite web applications.

[ Source: Google Chrome ]

Firefox 3 launch a success: 8 million downloads in 24 hours

June 20, 2008 1 comment

Mozilla’s Firefox 3 release event yesterday was an epic success. The servers logged over 8 million downloads during the 24-hour download day, and Mozilla has declared victory after exceeding its initial goal of 5 million downloads.

The rapid pace at which the downloads are occurring makes it difficult to compute an exact total. The counter appears to be lagging behind the actual count, and Mozilla’s statisticians say that the number could be as high as 3 million just four hours after Firefox’s official launch. Users can follow along at home by watching the counter at the official site.

Firefox 3 downloads have already exceeded the total number of downloads that took place in the first 24 hours after the Firefox 2 release. This is a significant milestone for Mozilla, which hopes that Firefox 3 will set the world record for the most software downloaded in a 24-hour period.

The display shows a breakdown by country, which indicates that the highest number of downloads is coming from the United States, followed by Germany and Spain. The US alone has reached over half a million downloads.

[ Spread Firefox | Download Day 2008 ]

Categories: Mozilla, Software Tags: , ,

Coming Tuesday, June 17th: Firefox 3

June 12, 2008 Leave a comment

Whenever we’re asked “when is Firefox going to be released” we endeavor to answer to the best of our abilities, but the truth of the matter is that we’ll only ever ship “when it’s ready”. We have a lot of indicators that help us understand when the product is ready for release: feedback from our pre-release milestones, excitement in the community and the press, availability of compatible Add-Ons, and a large active beta community helping us ensure that the release is compatible with all the various sites on the Internet.

After more than 34 months of active development, and with the contributions of thousands, we’re proud to announce that we’re ready. It is our expectation to ship Firefox 3 this upcoming Tuesday, June 17th. Put on your party hats and get ready to download Firefox 3 — the best web browser, period.

[ Source: Mozilla Developer News ]

Firefox community to set Guinness World Record

May 29, 2008 Leave a comment

Firefox 3 Download Day 2008

The Firefox community is always up to some cool, collaborative way to declare their passion for Firefox. What better way to do this than band together to set a Guinness World Record for the most software downloaded in 24 hours?!

With your help the Firefox community can go down in history! If you have any questions or ideas please drop us a line at worldrecord @ mozilla.com.

[ Source: The Mozilla Blog | Download Day Headquarters ]

Using OpenSSH keys with SSH.com Server

February 27, 2008 Leave a comment

You can determine which versions of the ssh protocol an ssh server supports by examining the service banner. The service banner includes both the remote protocol version and the remote software version.

Example:
telnet ssh_server 22

SSH-1.5-remote_software_version (supports ssh protocol 1 only)
SSH-1.99-remote_software_version (supports ssh protocols 1 and 2)
SSH-2.0-remote_software_version (supports ssh protocol 2 only)

ssh protocol 2:

1. Create a DSA or RSA key named foo. As of version 3.0 of the ssh.com server includes support for RSA keys.
$ cd ~/.ssh
$ ssh-keygen -t dsa -f foo

2. Convert the DSA or RSA key into “SECSH Public Key File Format,” the format used on an ssh.com server.
$ ssh-keygen -e -f foo > foo.pub

3. Copy the foo.pub file to the ssh.com server.
$ scp foo.pub user@ssh.com_host:.ssh2

If the remote server only allows ssh protocol 2, you may receive the following errors:

scp: warning: Executing scp1 compatibility.
scp: FATAL: Executing ssh1 in compatibility mode failed (Check that scp1 is in your PATH).
lost connection

Use sftp instead to transfer the key:

$ sftp user@ssh.com_host
put foo.pub .ssh2

4. Add the appropriate ~/.ssh2/authorization file entry in the ssh.com server.
$ ssh user@ssh.com_host ‘echo “key foo.pub” >> .ssh2/authorization’

5. Login to the ssh.com server using the foo identity.
$ ssh -o IdentityFile2=~/.ssh/foo user@ssh.com_host

ssh protocol 1:

1. Create an RSA1 key.
$ cd ~/.ssh
$ ssh-keygen -t rsa1

2. Append the ~/.ssh/identity.pub file to the ~/.ssh/authorized_keys file on the ssh.com server.
$ cat ~/.ssh/identity.pub | ssh remote_server “cat – >> ~/.ssh/authorized_keys”

Note: Any ssh.com server only allowing ssh protocol 1 should be upgraded, as usage of ssh protocol 1 itself is not recommended.

Keep Windows Up to Date Quickly with Appupdater

December 26, 2007 1 comment
Appupdater

Command line application Appupdater is similar to the Linux apt-get package management. It enables you to install and update many common programs.

Download and Install Appupdater and execute one of the following:

appupdater –update
appupdater –upgrade

To install a specific application:

appupdater –install=packagename

To list available packages:

appupdater –available

To list installed packages:

appupdater –list

[Source: Hackosis ]

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