Posts Tagged ‘Ubuntu’

Setting your computer time in Ubuntu

October 5th, 2010

You computer’s clock does more than just tell you the time. This clock also stamps your email with the correct time as well as documents and much more. So when your PC clock is off, your life is off (at least while you are working). So it is necessary to keep your machine time accurate. But how do you do this? Besides making sure your hardware clock is correct (which is commonly done through the BIOS settings), you need to know how to set the time.

In this article I am going to show you how to change the time on your Ubuntu machine using both the GUI and the command line. Hopefully, when you’re done with this, your computer clock will always be accurate.

Another option

Of course there is always another option. You can always set up NTP on your machine. I have already covered this in my article “Installing and configuring NTP on Linux“. That is, by far, the most reliable way to manage your clock. But when you don’t have constant access to the internet, or you simply don’t want to install a daemon on your machine – you have to resort to other methods. Let’s take a look at them here.

Command line

In order to set the date from the command line, you use the date command. The date command, however, is not the simplest command to figure out – at least not from the man page. If you look at the man page for date you see the time format uses a specific time string format like:

MMDDhhmmYYYY.ss

What the above string means is:

* MM is a two digit month, between 01 to 12.
* DD is a two digit day, between 01 and 31. NOTE: Regular rules for days, according to month and year, apply.
* hh is two digit hour, using the 24-hour period so it is between 00 and 23.
* mm is two digit minute, between 00 and 59.
* YYYY is the year; it can be two digit or four digit: your choice.
* ss is two digit seconds. The period (“.”) before the ss is necessary.

So, let’s say you want to set the correct date and time for this exact moment (the moment I am writing, not your reading). To do this I would enter the command:

sudo date 100507492010.00

at which point you would be returned:

Tue Oct 5 07:50:00 EDT 2010

GUI

Figure 1

Now, let’s take a look and see how this is done from the graphical front end. To do this click System > Administration > Time and Date. When you do this you will have to click the “lock” button to unlock this tool for changes. When you click this you will have to enter your sudo password. Upon proper authentication you will then be able to use the drop downs for hours, minutes, and seconds. When you change the time, you only need to close the tool, no saving required. NOTE: You can also change the date as well as the timezone with this same tool.

Source:http://www.ghacks.net/2010/10/05/setting-your-computer-time-in-ubuntu/

Linux Launches Ubuntu 10.10 Release Candidate

October 1st, 2010

Linux has launched the Release Candidate for Ubuntu 10.10 to users as the final version approaches its release deadline.

On Thursday, Linux rolled out the official Release Candidate of its upcoming Ubuntu OS version 10.10, codenamed Maverick Meerkat, tech news site PC World reports.

The Release Candidate is the last official pre-release version of the operating system, as the final product will be released to the public on the 10 October.

The RC showcases that Ubuntu 10.10 will use an updated Linux Kernel, version 2.6.35-22.33, come with an integrated and highly improved GNOME 2.32.0 desktop environment, multi-touch, and support for Intel’s Sandybridge among others.

The OS is integrated with OpenOffice.org version 3.2.1 and Mozilla Firefox 3.6.9, extended support for Gwibber and photo manager has been changed to Shotwell in place of F-Spot.

Maverick Meerkat will be the 13th release from the Ubuntu family. The Release Candidate can be downloaded from here.

Source:http://www.itproportal.com/portal/news/article/2010/10/1/linux-launches-ubuntu-1010-release-candidate/

Why Ubuntu Linux Is a Good Business Choice

July 26th, 2010

Chances are good that if someone walked into your office right now and peeked over your shoulder, they would see a Windows operating system on your computer. But, did you know that you have a choice of something other than Windows for that computer on your desk, and that you have the same choice for the servers in your data center

One of those choices is Ubuntu Linux, a greatly enhanced Debian-based Linux distribution that installs easily, has the familiar Windows look and feel, and operates well on older hardware (expensive upgrade not required). Linux fans tout the positive attributes, often at high decibel levels, of Ubuntu Linux, which is perhaps the world’s most popular Linux distribution. But, is it business worthy?

Let’s first consider Ubuntu as a replacement for your Windows desktop or laptop operating system. Computer owners generally use an Internet browser, a word processing program, the occasional spreadsheet, an email application and almost nothing else. These computer owners may not realize that they’re paying $150 to $300 for the OS and another $300 or more for the office suite–most of which they’ll never use. Why add hundreds of dollars to a computer system that has a life expectancy of three to four years? Software costs often exceed hardware costs by two or three times. Small businesses resort to piracy or doing without needed software to compensate for those costs. Neither is a good choice.

The alternative puts you at odds with the accepted philosophy that Windows is your only choice for desktop computers and servers. The Linux concept requires that you step outside the standard box that Microsoft has placed you in, and realize that you have a choice that makes sense for you, your bank account, and your business.

Your Windows computers need an anti-virus program that hinders performance, anti-spyware software that you have to run manually to scan for all the nasties that invade your computing habitat, and a personal firewall to ward off those over-the-network attackers.

Alternatively, Ubuntu is free. You can download any version of it and use it for any purpose. Upgrades are also free. There’s no need for any anti-virus software or anti-spyware applications on Linux, which comes with a personal firewall, if you want to use it.

Linux also comes to you with a free office suite, OpenOffice.org that includes Microsoft-compatible applications. They look and behave so much like Microsoft’s office suite that you may never realize any difference between the two.

Ubuntu comes standard with thousands of free applications on the installation CD and in the Ubuntu software repository. Unless there’s some compelling application that you’re required to purchase, you’ll never spend a penny on software for your business systems. That’s correct, you can use Ubuntu and all the available software without paying anyone for it. Further, the software is open source, which means that you can look at and change the code for any purpose-even to resell it as your own. That goes for the Linux code and most software programs that you install on a system. Individual software applications have their own licensing and restrictions.

For business owners who fear the word “free” for business-critical applications and continuity, Ubuntu Linux has commercial support available from the company that sponsors it: Canonical. Canonical and Ubuntu are the entrepreneurial ventures of Mark Shuttleworth, the South African businessperson who also founded Thawte, an Internet security company, and started the Ubuntu project to help everyone in the world have access to free computing software. He founded Canonical to support Ubuntu Linux for those who wish to purchase support for Ubuntu. Like most commercially supported Linux distributions, Ubuntu’s support is subscription-based. Canonical also offers training courses and consulting services to their corporate clients.

Ubuntu has a version that’s right for all aspects of your business. There are Ubuntu versions for netbooks, desktop computers, servers and cloud computing needs. The cloud computing Ubuntu, known as Ubuntu Enterprise Cloud (UEC), ties in closely with Amazon.com’s Elastic Compute Cloud platform (EC2).

Canonical releases major versions of Ubuntu every six months in April and in October of each year. Every two years, Canonical releases a Long Term Support (LTS) version. Canonical supports the LTS versions for five full years with updates, security fixes and upgrades-all free of charge.

If you’re tired of vendor lock-in, major hardware upgrades with each new version’s arrival, high support costs, and runaway software prices, Ubuntu makes sense for you and your business. Ubuntu, Canonical and your business make the perfect team and create the perfect environment to protect you and your customers.

Source:http://www.pcworld.com/businesscenter/article/201842/why_ubuntu_linux_is_a_good_business_choice.html?tk=hp_new

Ubuntu developing new Unity UI, instant-on versions for netbook

May 10th, 2010

Canonical is making fast progress on a promise to improve the netbook experience by launching a new user interface dubbed “Unity” and plans for light editions of Ubuntu.

In a Mark Shuttleworth blog posted today, the Unity interface and light editions of Ubuntu under development are aimed at the dual-boot-instant-on netbook market.

An early development codebase of Unity is available now for early testing and experimentation, he announced today. Unity will likely first surface in the netbook edition of the next Ubuntu version 10.10.

Shuttleworth, the founder of Ubuntu who recently left his post as Canonical’s CEO to focus on development, said Unity does not use the GNOME shell because it is focused exclusively on this instant-on, netbook market and does not provide significant file management capabilities. Due to the niche aspect of this Linux interface effort, he does not see Unity or Ubuntu light as competitive to current and future GNOME and KDE interface shells.

Unity, he said, is optimized for the web services experience and will offer a “dash” interface, instant-on and touch capabilities. One chief goal is to maximize speed — which is defined as getting users to the Internet and to cloud services pronto, rather than the typical fast boot-up metric everyone focused on.

It is also designed to maximize screen real estate, which is an issue for users of netbooks — like me. Even writing a blog as simple as this is on a netbook is constraining. “We focused on maximising screen real estate for content,” Shuttleworth wrote. ‘In particular, we focused on maximising the available vertical pixels for web browsing. Netbooks have screens which are wide, but shallow. Notebooks in general are moving to wide screen formats. So vertical space is more precious than horizontal space.”

Unity is also designed for the dual-boot environment; that is, for running Windows and Linux simultaneously on netbooks and desktops. This is a very smart move. Other Linux desktops have taken steps at running alongside windows well, but the lack of focus on dual boot has kept the Linux desktop use very low.

Source:http://www.zdnet.com/blog/open-source/ubuntu-developing-new-unity-ui-instant-on-versions-for-netbook/6455

Ubuntu “Lucid Lynx” 10.04 LTS

May 6th, 2010

The recently released 10.04 version of Ubuntu is the third Long Term Support (LTS) version Canonical has released. I installed this new version on four of my laptops (2 netbooks, 1 normal laptop, 1 portable desktop replacement), and here’s my impression of it.

The installation is much simpler and more to the point that ever before. I really liked the look and feel of it. In all cases, either installing from scratch (in 2 of my laptops), or upgrading (in the rest 2 of my laptops), everything worked perfectly. I remember back in the day when upgrades occasionally would break X11 etc, but not this time. The only setting that was not preserved was under my husband’s account: the “two finger scrolling” setting on the Synaptic mouse panel was reversed to “edge scrolling” after upgrading. No biggie.

Loading Ubuntu is now super-fast. It loads at around 10 seconds on my hard drive-based laptops, and in about 15 seconds on my SSD-based ones. The new login screen is beautiful and functional. Only thing I’d like added in that screen would be a battery life indicator.

Originally, I had a stability issue with a complete lockup, but after the first update packages hit the mirrors, the problem disappeared (I’m guessing that I was hitting the well-publicized Intel gfx driver issue). Since these updates, everything has been rock solid, and with a good performance.

Compared to older releases, this version requires more RAM. Two of my laptops have 512 MB of RAM (I will upgrade one of these to 1 GB, but not the other, because that netbook is too messy to open up), and while the system would start up using only about 140 MB of that RAM, by the moment I would use the package manager, it’d use up all that RAM, plus an additional 150 MB of swap. I also noticed that after having the machine used for a few days without a reboot, the RAM usage will go up little by little, as evident in my screenshot below. However, if you’re not using Open Office, or installing lots of packages, or having too many Firefox tabs open, 512 MB of RAM should be enough. I calculated that I’d need about 768 MB of RAM as a minimum for a more “involved” usage pattern. Since I’m preparing the 512 MB netbook for my mom, who she can’t use a computer yet (I’m hoping to teach her when I visit her soon), I think 512 MB will be enough for her.

In terms of new features, there is a new dark theme, and new notification applets into play, which I thought they looked and functioned well. Canonical has done a lot of work reworking the look and functionality of their main applets, and this has paid of. Only gripe I have is that one of these indicator applets doesn’t let you remove the “mail” icon, so it takes up space on my netbook’s limited screen space for nothing — since I don’t use Evolution (I only use Gmail, online). And there’s no way to setup the mail notification just to get Gmail notifications (without the involvement of Evolution).

Other new features include the new Ubuntu music store, and Ubuntu One — features that I personally don’t have any use for. However, I was happy to see an updated Empathy client, and a new social application with support for Twitter and Facebook. I hope they add Buzz support soon too! Maybe some Google Voice integration via a new Ubuntu-sponsored VoIP server would be nice too!

The only thing that really didn’t sit well with me was the removal of the “Menus & Toolbars” dialog. Ubuntu now has a default setting of “selective text besides icons”. You can’t change that, not even via gconf-editor (that I could find, at least). This is not a great idea for small screens, like my two netbooks, one of which has only a 1024×576 resolution (and please don’t direct me to “Ubuntu Netbook Remix” distro — not interested). I understand the need for defaults and ease of use, but this is one UI feature that is still needed.

Another new feature on Ubuntu is now the inclusion of the video editor PiTiVi. PiTiVi is my favorite Linux video editor in terms of usage simplicity. Unfortunately, just before the release of Ubuntu, they switched to a new way of rendering, that made the editor’s previewing 100 to 150 times slower (currently it’s software rendering only, hardware acceleration is planned for later in the year). Whereas in all the previous versions I was able to edit MPEG4-SP from 720p Kodak digicams *faster than real-time*, now I was left with about 1 frame per 2-3 seconds. This has made PiTiVi utterly useless to me [and my mom]. Its developers told me that they made these architectural changes in order to add features that required it, like transitions, fades, and what not. Speaking as a filmmaker, I prefer a cuts-only featureless video editor that is able to preview these cuts in real time, rather than adding a few more features that makes the editor so dog-slow that it doesn’t give me an overview of what I’m editing (making editing “blind”). There’s a saying among us filmmakers: “if you can’t do it with plain cuts, then you’re doing it wrong”.

On the bright side of things, suspend-to-RAM works perfectly across the board. Linux and Ubuntu have come a long way supporting all these different BIOS and offering a great experience with laptop sleep. In fact, my portable desktop replacement laptop was always problematic in terms of sleep, and required kernel patches. Not with this version, where everything worked out of the box!

The only thing that I had to manually add support for was for one of my netbooks. I had to download and put on my rc.local the “acerfand” service. Without it, the fan would never stop spinning, and that had a massive battery life impact (battery life down to 1:30 hours from the normal 2:30 hours). But again, in retrospect, that specific netbook required a lot of extra work after installing Ubuntu: from microphone drivers, wifi drivers, special secondary SDHC slot support, fan, etc etc. This time instead, all I had to do was to take care of the fan. Everything else worked out of the box.

As a conclusion, it is my opinion, that Ubuntu is by far the most usable Linux distribution, and for many people it’s perfect as a replacement to Windows and Mac OS X. Back in the day there were a lot of “but” when someone was suggesting Ubuntu as a complete replacement, but I think that the distro has come a long way, and delivers the goods.

Source:http://www.osnews.com/story/23261/Review_Ubuntu_Lucid_Lynx_10_04_LTS

MuleSoft Partners With Canonical to Improve Tomcat Packaging for Ubuntu and Debian

April 21st, 2010

MuleSoft, the Web Middleware Company, today announced that it has partnered with Canonical, the number one Ubuntu services provider. Through this partnership, MuleSoft is working with Canonical to improve the Apache Tomcat package for Ubuntu and Debian. These contributions, focused on improving “out-of-the-box” usability of Tomcat with these distributions of Linux, will appear in the upcoming Ubuntu 10.04 LTS and Debian Squeeze (6.0) releases.

“We share MuleSoft’s goal in improving the experience for users of open source software,” said Matt Asay, COO of Canonical. “The work that MuleSoft is doing will dramatically simplify the installation, configuration and use of Tomcat for the Debian and Ubuntu communities. We are fortunate to have some of the world’s leading Tomcat experts now involved in both projects.”
Since its launch in October 2004, Ubuntu has become the fastest growing Linux distribution in the world, with millions of users on the desktop and server. Built by a worldwide team of expert developers, Ubuntu brings together the world’s best free and open source software and contains a number of important applications, including a web browser, office suite, media applications, instant messaging and more, all for use on common technology platforms.
Improvements made to the Tomcat packages in Debian and Ubuntu include:

JSVC is no longer used by the package
Authbind is now the standard method for binding Tomcat to ports lower than 1024
The security manager now defaults to the disabled state
Reliable restarts are now implemented in the init script
The Debian Tomcat 6 package is now up to date with the latest stable release of Tomcat, 6.0.24
“Part of our core mission at MuleSoft is to continue driving innovation in open source and to make life easier for users of Tomcat, however they access it,” said Jason Brittain, MuleSoft software architect and co-author of Tomcat: the Definitive Guide. “About half of all the people who run Tomcat in a server environment get it through a Linux distribution, so many of the world’s Tomcat users will benefit from these improvements.”

Source:http://productivityapps.itbusinessnet.com/articles/viewarticle.jsp?id=1050873

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