Howto: Redhat enterprise Linux setup DST – Daylight Saving Time

in Categories Debian Linux, Gentoo Linux, GNU/Open source, Howto, India, Linux, RedHat/Fedora Linux, Sys admin, Tips, Ubuntu Linux, Windows server last updated March 12, 2007

Wikipedia defines DST as follows:
Daylight saving time (DST), also known as summer time in British English, is the convention of advancing clocks so that evenings have more daylight and mornings have less. Typically clocks are adjusted forward one hour in late winter or early spring and are adjusted backward in autumn. Details vary by location and change occasionally; see When it starts and stops below.

Do I need to apply the DST patch on my server?

DST patch is only required in few countries such as North America countries (e.g. United States. DST is not required in India and Asia (China, Hong Kong, Macau, Taiwan) at all (however once we had DST). Please see this wikipedia article. It display usage and a short history of daylight saving time by location in alphabetic order.

Daylight Saving Time map image worldwild
(See DST heat map)

Do I need to apply the DST patch on AIX/UNIX/Linux/HP-UX/Solaris/Windows servers running in IST (Indian) timezone?

I’ve received at least 8-10 email regarding IST timetonze. Short answer is no (see heat map).

Task: Verify if you need DST update i.e. display timezone data

Use the zdump utility to display timezone data.
# zdump -v Australia/Queensland
# zdump -v /etc/localtime | grep 2007

If you see date “Sun Mar 11” your system is already patched and no need to read further.

Many of our servers located in north America and all of these server powered by RedHat enterprise Linux or Debian Linux or MS-Windows server 2003.

If you are running RHEL 4.0…

Update tzdata package:
# up2date -u tzdata
# system-config-date

# cp /usr/share/zoneinfo/ America/NewYork /etc/localtime
# zdump -v /etc/localtime |grep 2007

If you are running Debian/Ubuntu Linux…

Use apt-get to update tzdata package:
$ sudo apt-get install tzdata
# apt-get install tzdata

Run tzconfig to update your configuration:
# tzconfig
# zdump -v /etc/localtime |grep 2007

Microsoft Window Server / XP DST

Please see – how to configure daylight saving time for the United States in 2007

Sun Java and DST

A few servers running Sun Java requires update as well.

Manually update DST under Linux

You can manually update your configuration by following these inductions as well.

Check DST using a Webbrowser

You can also check your Linux or Windows workstation by visiting the University of Minnesota’s DST time check site (browser with javascript support required).

ELCOT India moving to Linux

in Categories Beyond nixCraft, GNU/Open source, India, Linux, News last updated January 4, 2007

ELCOT is a Government undertaking responsible in the promotion of Information Technology, Electronics in the State of Tamil Nadu, a southern state in India.

Now they are moving to Linux and other open source project 😀

ELCOT decided in favor of open-source software because of its lower cost than proprietary software from Microsoft Corp. and other vendors.

The company will migrate from Microsoft at the server and desktop levels, according to Umashankar. “My job is to save cost, and open-source software delivers the same if not more efficiency at a marginal cost,” he added.

ELCOT negotiated with Microsoft to lower the price of Windows XP Home Edition to 500 Indian rupees (US$11), but the company was not willing to cut prices on the software, Umashankar said.

More information available at Yahoo news : Key Indian IT services organization moving to Linux

Taiwan quake causes Internet & telecom problem across India and Asia

in Categories Beyond nixCraft, India, Networking, News last updated December 28, 2006

The strong earth quake off Taiwan on Tuesday night that cut undersea cable brought down Internet and long distance telephone calls for several hours.

At my work place we have several LL from VSNL and one of them went completely down. Thanks to some smart networking and routing traffic was routed via other providers.

Most ISPs in India use Singapore Telecommunications (SingTel). The work is in progress and it will take 2 weeks to fix cable.

=> Total 6 undersea cables are out of order
=> Disrupts telecommunication across Asia
=> In India, back offices and call centers experienced some difficulty
=> Many ISP were down or working extremely slow

But thanks to superb network design and multiple service providers most services back online now.

More information is available here

Open source and a society that shares – India's tradition of knowledge

in Categories Beyond nixCraft, GNU/Open source, India, RedHat/Fedora Linux last updated November 27, 2006

Red Hat magazine has published an article about common things in open source and India’s tradition of knowledge. Intellectual property. Who does it help? An Indian man examines his country’s history and concludes that shared knowledge benefits everyone. And the economy.

From the article:
Intellectual property. It’s one of the defining terms of the 21st century. The recent knowledge symposium, “Owning the future: Ideas and their role in the digital age” deconstructed the term “intellectual property” and examined the assumptions beneath it. Since the event was being held in India, it seemed appropriate to examine intellectual property in the context of Indian traditions of knowledge.

Though no one has a proprietary lock on yoga, it is still a thriving $30 billion business in the United States.

But, in the digital era, we can enrich ourselves immensely by giving. Indian tradition belives that knowledge grows through sharing. The open source philosophy, based on the principles of collaboration, community, and shared ownership of intellectual resources has much in common with Indian traditions of knowledge. We therefore owe it, not only to India, but to the world, to ensure that the sharing of knowledge and not its reduction into “intellectual property” is the norm.

A society that shares: India’s tradition of knowledge []

Although, I agree with author, in reality education is a big business under the name of knowledge in India. Just look at all those engineering and medical colleges/universities. Normal student like you and me cannot take admission without student loan. This is hard reality, period.

Enjoy the Silence

in Categories Beyond nixCraft, India last updated November 18, 2006

Enjoy the Silence – I will be back by Tuesday.

For the next two/three days, I’ll spend most of my time with friends and we are going to GOA – west coast of India. GOA is internationally renowned for its beaches, sea food, and it is one of the hottest holiday destinations for European travelers.

Check out wikipedia Goa web-page for more information 🙂

FOSS.IN – India's #1 FOSS event

in Categories India, News last updated November 6, 2006

FOSS.IN is one of the world’s largest and most focussed FOSS events, held annually in India. Over the years, it has attracted thousands of participants, and the speaker roster reads like a “Who is Who” of FOSS contributors from across the world.

FOSS.IN/2006 will be held on November 24-26, 2006, at National Science Symposium Centre of the Indian Institute of Science (IIS) in Bangalore, India. It will cover
=> Talk of technical talks
=> Discussions and workshops/tutorials related to FOSS projects and technologies.
=> And more FOSS stuff 🙂

=> More info @

Webyog's SQLyog available for download and it is released Under GPL

in Categories Beyond nixCraft, India, News, Windows last updated September 15, 2006

Bangalore based Webyog Softworks Pvt. Ltd decided to release SQLyog under GPL.

It is MySQL GUI tool, which is the most powerful MySQL Manager and MySQL Admin Tool, combining the features of MySQL Query Browser, phpMyAdmin and various other MySQL Front Ends and MySQL Clients in a single intuitive interface.

Connection Manager

Multible Connections + HTTP Tunnel Settings

More screenshots available at official site.

We are very glad to distribute SQLyog under an open source licence. This has been made possible due to the enormous support from our users and customers, said Rohit Nadhani, co-founder of Webyog.

=> Download Link

Interview: Red Hat's open source scholarship challenge

in Categories India, News, RedHat/Fedora Linux last updated May 27, 2006

IIT-B and Red Hat India is offering The Open Source challenge scholarship for students. Most of students in my university write projects using Java, Oracle or Microsoft development (C/C++ or .NET) tools.

There is no dearth of IT talent in India, but for a country that churns out thousands of IT students every year, the number of Indian contributors in the open source software (OSS) world is disproportionately low, due in part to a lack of proper mentoring. This is 100% true and to encourage more students to go into OSS development, the Kanwal Rekhi School of Information Technology (KReSIT) at the Indian Institute of Technology Bombay partners with Red Hat for an open source scholarship challenge each year

There an email interview with Venkatesh Hariharan, head of Open Source Affairs at Red Hat India and coordinator of the challenge, provides details about the event.

See also:

LIC is migrating to Red Hat Desktop and servers

in Categories India, News, RedHat/Fedora Linux last updated May 23, 2006

Life Insurance Corporation (LIC) of India, the country’s largest insurance player will deploy Red Hat Enterprise Linux across its 2,048 branches, 100 divisional offices executing seven zonal offices, head office, subsidiary offices and overseas locations. 🙂

LIC will completely migrate all its mission-critical business applications to Red Hat Enterprise Linux across all its locations in India and abroad.

Currently LIC use SCO UNIX and other versions of UNIX on servers. This move will not just reduce cost but it will focus on core business applications and leave the management of the entire operating system infrastructure to Red Hat, India.

India lays down 'open' challenge

in Categories India, Linux, News last updated May 13, 2006

There is yet another-evidence that suggests the growing usage of open source and Linux in India. Bill Thompson who is a regular commentator on the BBC World Service programme Digital Planet. After his first trip to India, Bill looks forward to the end of western domination of the free software community

According to him, “Free software provides a bridge between the affluence of the West and the poverty of most of the world’s population“.

FTA “…I’d come to India with the sense that, like Brazil and other countries outside the West that are taking free software seriously, India is moving into a new phase in its use of free and open source software…

These guys – and it was a boy’s night out, though there are women members of the group too – are using the freedom which the Linux distribution licence gives them to build tools and technologies for themselves …Read more