Celestia is a real-time visual space simulation astronomy program. It is a cross platform, open source software and released under the GNU General Public License. NASA and ESA have used Celestia in their educational and for interfacing to trajectory analysis software. It allows users to travel through an extensive universe, modeled after reality, at any speed, in any direction and at any time in history. Celestia displays and interacts with objects ranging in scale from artificial satellites to entire galaxies in three dimensions using OpenGL. It is a perfect software for astronomer, educator, student, and teacher for astronomy purpose.
Slackware version 13.0 has been released and available for download from the official project website. This release brings with it many major changes since Slackware 12.2, including a completely reworked collection of X packages (a configuration file for X is no longer needed in most cases), major upgrades to the desktop environments (KDE version 4.2.4 and Xfce version 4.6.1), a new .txz package format with much better compression, and other upgrades all around — to the development system, network services, libraries, and major applications like Firefox and Thunderbird. Also, this is the first release of Slackware with native support for the 64-bit x86_64 architecture!
Microsoft chief operating officer Kevin Turner recently talked about netbook and claimed that retailers experiencing higher return rates as compare to MS-Windows operating systems:
And the reason that we were able to make so much traction – because this is the first real test of the value of Windows – the reason we were able to make so much traction on this particular space is because we went to retailers and said, “Hey, what are your return rates on these Linux netbooks that you are getting?” And they said, “Oh, gosh, they’re, like, four or five times higher than what we’re seeing on other PCs that have Windows.” I said, “Exactly.” So let’s do the TCO story. Let’s talk to customers. And you can’t find a retailer – I challenge you to find a retailer who wants to sell Linux on these netbooks, because the returns are bad. The customer complaints are bad. And our ability to really showcase the value proposition with Windows has never been greater and was never tested more than it was with this particular product. But we’ve made great progress there, but the up-sell opportunities with Windows 7, because it runs so well on these low-end laptops, is going to be tremendous for us.
Linux comes with various GUI based email client to stay in touch with your friends and family, and share information in newsgroups with other users. The following software is similar to Outlook Express or Windows Live Mail and is used by both home and office user.
Webmail interfaces allow users to access their mail with any standard web browser, from any computer, rather than relying on an e-mail client. However, e-mail client remains extremely popular in a large corporate environment, small business, home and power users. An e-mail client (also mail user agent (MUA)) is a frontend computer program used to manage e-mail. Mail can be stored on the client, on the server side, or in both places. Standard formats for mailboxes include Maildir and mbox.
The following are top five amazing piece of cross-platform software from various projects to make your life easy with wide variety of plug-ins / add-ons.
As a system admin, I need to use additional hard drives for to provide more storage space or to separate system data from user data. This procedure, adding physical block devices to virtualized guests, describes how to add a hard drive on the host to a virtualized guest using VMWare software running Linux as guest.
It is possible to add or remove a SCSI device explicitly, or to re-scan an entire SCSI bus without rebooting a running Linux VM guest. This how to is tested under Vmware Server and Vmware Workstation v6.0 (but should work with older version too). All instructions are tested on RHEL, Fedora, CentOS and Ubuntu Linux guest / hosts operating systems.
Research shows that if your web pages take longer than 5 seconds to load, you lose 50% of your viewers and sales. As a UNIX admin often end users and web developers complain about website loading speed and timings. Usually, there is nothing wrong with my servers or server farm. Fancy java script and images / flash makes site pretty slow. These tools are useful to debug performance problems for sys admins, developers and end users. Here are six tools that can analyzes web pages and tells you why they are slow. Use the following tools to:
- Make your site faster.
- Debug site problem, especially client side and server side stuff.
- Better user experience.
- Improve the web.
Google has announced Google Chrome OS, which should be available mid-2010. This is a direct challenge to MS Windows operating systems. This is excellent news and it is going to tied tightly to its Chrome Web browser. Google Chrome running within a new windowing system on top of a Linux kernel. Speed, simplicity and security are the key aspects of Google Chrome OS – said Sundar Pichai, VP Product Management, in a blog post.