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Category : Linux Kernel

Core OS Layer Is Comprised of Kernel Environment, Drivers, and Basic Interfaces

May 9th 2015 Posted at Linux Kernel
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Let us look at other 2 layers that perform an exceptional function for iPhone application development. Core Services layer consists of  fundamental system services which iPhone application developers require to use for all of the applications. Although, these types of services are not put to use directly via the iPhone developers, these types of services form a central part in nearly every technology within the system. Some of the crucial frameworks of the layer have Core Foundation framework, CFNetwork framework, Security framework etc.

The Core Foundation framework is actually tightly associated with the Foundation framework. It is made of C-based interfaces that include primary data management and service features available for iPhone applications. The Foundation framework likewise includes Objective-C interfaces for the same essential characteristics. During iPhone apps development in India, while expert iPhone developers in India want to use Foundation objects as well as Core Foundation types, they might leverage “toll-free bridging” which connect the 2 frameworks. Expert iPhone developers in India could take help from this specific characteristic if they want to use both Foundation as well as Core Foundation objects in iPhone apps development in India. This kind of support can be acquired for many of  data types, comprising the collection and string data types. The framework features class and type descriptions that will express if an object is bridged using toll-free bridging and in case it’s bridged, with which object it is performed.

CFNetwork is the one other framework in Core Services layer. CFNetwork has a set of high-performance, C-based interfaces that include object-oriented abstractions for making use of network protocols. iPhone apps developers happen to be in full control over  protocol using these abstractions. It is then quite easy to leverage lower-level constructs like BSD sockets. Tasks which include communicating with FTP and HTTP servers or resolving DNS hosts end up simpler and easier using this framework.

There’s no question that iPhone also has inherent built-in security features. Still, other than all of these functions, iOS has the benefit of separate Security framework to use through iPhone app developer to safeguard the info which application handles. This particular framework is employed to deal with certificates, private and public keys and also trust policies. A generation of cryptographically secure pseudo random numbers is also supported by this. The storage of certificates and cryptographic keys inside keychain also are supported by this framework. The key chain accommodates important consumer information.  CommonCrypto interfaces present additional support meant for symmetric encryption, HMAC, and Digests. The Digests attribute will provide functions which happens to be primarily appropriate for  functionality generally determined in the OpenSSL library, which isn’t obtainable in iPhone Operating-system.

So as to access elements from an XML document,  Foundation framework provides NSXMLParser class. Additional support regarding manipulating XML content is furnished by the libXML2 libraries. This particular open source library makes it possible for iPhone application developers parse as well as write arbitrary XML data speedily and transform XML content to HTML.

Core OS layer is  fourth layer and it is also referred to as the deepest layer of iOS. It contains kernel environment, drivers, along with basic interfaces within the operating system. The kernel itself is in accordance with Mach and is liable for every part of  operating-system. Each of the capabilities like virtual memory system, threads, file system, network, and also interprocess communication are monitored by way of the kernel. The drivers as of this layer in addition provide have the interface between the existing hardware and system frameworks. Nevertheless, because of security measures, just a limited list of system frameworks along with applications could gain access to kernel along with drivers. iPhone OS provides list of interfaces intended for  accessing numerous low-level features of  operating-system and these features could be utilized through the LibSystem library.
 

Justin McAllister serves as a iphone app developer in an application development corporation. He has added in numerous iPhone app development projects.

Freebsd Vps Offers Several Great Features

May 6th 2015 Posted at Linux Kernel
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FreeBSD VPS has become quite popular in the recent times though it hasnt been long since its internet launch. This operating system is highly advanced and is a new revolution that has taken the world by storm. Brands like IBM, Juniper and Nokia have been using it for quite some time now which speaks of its reliability and security. Professional developer teams have been researching and developing the technology for well over three decades now. Since it can be used with internet servers and with intranet, it would be a great choice for any kind of business.

Main Features They Have to Offer You

The features that are offered by FreeBSD VPS are one of a kind and the main reason why it has gained much popularity in the industry. The system works with 386 hardware. It requires very low memory space for operating its interface. You will still have a lot of available memory for software and applications that you want to use for other purposes. This efficient and powerful software can be a great tool for any business since it offers high level performance, reliability and can work well even with very heavy loads and in stressful environments.

Simple Upgrading Process

FreeBSD VPS is beneficial to businesses for another reason. The upgrading process is relatively simpler and easier compared to other systems. You would not have to spend too much time or effort for the process. Also, upgrading is risk free since it has it optimized for applications, hardware and systems. Even if you change the hardware you will be able to rebuild the system quite easily without serious problems.

Easy Management of Software

This new technology offers advanced features that will make it easy for you to manage software applications. For users, it is always a frustrating task to keep track of all software, upgrade them and manage them since it is time consuming. However, this new technology offers you the use of Ports Collection which can be a very helpful tool. This application offers easy use for amateurs and for professionals. Using the application you will be able to easily install any program you want, manage it and even uninstall it within a few moments without much hassles. Some of the advanced features that are offered by the new technology are not commercially available in the industry yet. A great advantage of using this particular system is that there is no cost involved for you. FreeBSD VPS is available free for use on the internet so you would be able to try it yourself for your company without having to worry about investing anything at all.

To get more information about FreeBSD VPS and to find a host of virtual private servers, please visit http://www.nqhost.com/.

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What is Kernel32.dll error and how to fix it quickly within clicks?

May 4th 2015 Posted at Linux Kernel
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Are you annoyed with the frequent Kernel32.dll error when using the computer? Do you want to fix Kernel32.dll error quickly within minutes and enjoy a faster computer every day? If this is the case for you then you are in the right place here.

To learn how to fix Kernel32.dll error, it is necessary for you to know what a Dll error is. A Dll error is a message that popped up by a windows program when it fails to read needed dll files. Most of the time, these errors always include. dll not found error, dll missing error, and dll corrupt error. If the program cannot read its necessary information that stored in the Dll files, it will display the error.

So what causes the Kernel32.dll error? Actually, there are many causes for why you get these errors when running your programs. But the most common reason of the errors is a bad installation or uninstallation of the programs. So please make sure that you are always download programs from secured websites. A corrupt file in the installation files will result in the annoying Kernel32.dll error.

Then how to fix Kernel32.dll error? There are a couple ways for you to fix Kernel32.dll error such as uninstall and the reinstall the programs, or correct it by downloading the specific Dll file if you are able to find the name of file and download it from the Internet.  However, the easiest way is to run a registry repair toolkit for a corrupt Windows registry is always the most common cause for Kernel32.dll error. Cleaning your Windows registry will help you quickly eliminate these errors. The registry repair toolkit will quickly scan your computer for potential problems and automatically fix them for you.

You should run registry repair toolkit regularly to always keep your computer clean and free of Kernel32.dll error. And it is easy for you to locate free and powerful registry repair software online to scan and fix Kernel32.dll error.

Do you want to fix Kernel32.dll error quickly and always enjoy a faster computer without errors? If so, a best registry repair toolkit will be your right choice. It will thoroughly scan your computer and repair Kernel32.dll error and other kinds of Dll errors within clicks.

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Steps to Repair Kernel32.dll Error Quickly and Effectively on Your PC?

May 4th 2015 Posted at Linux Kernel
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Have you ever faced the situation while you are starting up your computer, operating or opening a new program, then you run across a message in small windows warning you of Kernel32.dll Error? This situation might be extremely troublesome and embarrassed, especially when you are working on computer because this case might lead your computer to be crashed and your Windows system to be in danger. Your computer needs to be repaired instantly if you wish to save your important data and your precious working time.

 

Cause of Kernel32.dll error

There are some of the frequent reasons why Kernel32.dll error occurs. Windows DLL becomes corrupted due to enormous buildup of junk files stored in Windows registry; it can also occur when you keep on doing installation and uninstallation of programs on your computer.

 

How to fix Kernel32.dll error effectively?

At the beginning, you need to check out the CUP of your PC to make sure if it is overheating or there is a lot of dust on the fan. In this case, you can use blower to handle it. Besides, you need to confirm if the CPU is over frequency. And then you should reset it to Windows default values.

 

Meanwhile, if you want to fix Kernel32.dll error, you can download another new Kernel32.dll file from the reliable sources online and place it at its specific location. However, you need to be careful when you operate this process due to it requires superior technical skill to identify the correct location of this file where it should be located or replaced.

 

What’s more, in order to fix Kernel32.dll error, you need to use a registry cleaner program which can enable you to check out what wrong with Kernel32.dll, and fix it with the powerful utility in minutes. Registry cleaner can not only fix DLL error, but also fix the other computer problems. It is the best nurse for your computer.

 

Are you desired to fix Kernel32.DLL Error? The best solution is to use the registry repair tool to make you computer run smoothly.

Anaconda is Red Hat Linux?s graphical installer

May 1st 2015 Posted at Linux Kernel
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Red Hat Linux is computer software. It is an operating system. It was the system of the company Red Hat which is had assembled. It discontinued later in the year 2004. The first version the Linux program was opened in the year 1994. This was the first package for RPM package manager, and then it was also used for other distributions like Yellow Dog Linux and Mandriva Linux.

Red Hat Linux was discontinued because it favored enterprise opportunities. Since then it is called Red Hat Enterprise Linux (RHEL). They also have a free version which can be used at home by any one. It is developed by the company Fedora and is supported by Fedora community project.

The following are its features:

· The third version of the Linux was the first ever system which supported Executable and linkable format.

· Anaconda is their graphical installer. It is very easy for beginners and they can understand and learn a lot from it.

· Also, they have a built in tool called Lokkit which is used for configuration of firewall.

· The sixth version was also revolutionary. It had developed a software library for self configuration and discovery of Hardware. It was called Kudzu.

· Version 7 saw the development of GCCs. Better and upgraded GCCs helped in working with c++ in an easier way.

· Character encoding was the highlight of version 8. Although, English users didn’t feel much of an impact through this, it was very useful in multi lingual formats. It also helped in providing directions for working with European languages.

· Version 8 also had a special feature called the Blue curve Desktop theme.

· Native POSIX thread library was the focus point of Version 9.

Although, it brought about so many features and new technologies, it had some basic necessities lacking. It faced a lot or problems in the copyright and patent section. For instance in the RhythmBox and XMMS software, MP3 was disabled which was a major inconvenience. For this, Red Hat has advised its users to use Ogg Vorbis. It had unfortunately no patents though.

I am a professional Red Hat Linux Certified Hardware Networking engineer & currently working in multinational company. For more information related to  computer IT courses, hardware & networking institutes & courses please visit: www.jetkinginfotrain.com

Understanding Freebsd Vps And Its Features

April 29th 2015 Posted at Linux Kernel
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Windows VPS can be a great choice for any website owner or web developer because of the various benefits that if offers. With so many hosting companies that offer their services it is quite simple and easy to find a reliable and cost effective hosting service. Quite a lot of people face difficulties in selecting a hosting company simply because of the variety of choices that are available. There are some major factors that you can keep in mind when you are searching for hosting companies that can provide you suitable packages. You should know that in order to enjoy reliable, efficient services you will have to research a little.

Finding Services that Will Provide You All the Advantages

If you want to find the best possible windows VPS services then you can ask colleagues or friends who may have some experience with using this hosting solution. You can ask for references for hosting companies and feedback about their experiences. This will make your job easier. In most cases, word of mouth is an ideal way of finding a good, reliable and efficient hosting company. Simply by contacting other people it would be possible for you to find hosting companies that can cater to your specific needs. You can even research online and visit online forums that deal with this particular topic. Read the feedback of others to get an idea about what a particular company can offer you.

Look for A Company that Offers You Great Features

Windows VPS offers many good benefits which is the main reason why quite a lot of companies today select this hosting service. When you are searching for a hosting company you would want to go for one which will allow you the freedom to install and use any software and program that you want. You should have the option of using a program that you are comfortable using so that you can upgrade it easily yourself without having to call in an expert. With VPS, half your work would be simplified since it offers automatic updates.

Isolated Experience

You will also want to find a hosting package that will offer you complete isolation so that you dont have to share your dedicated resources with any other website. With VPS this is possible since you will be able to have guaranteed resources and would not have to pay high costs for it. With the tough competition that most businesses face online it is essential for them to select technology that will allow them to be on top of their game. With windows VPS you can now enjoy all of those benefits without having to spend too much.

To get more information about Windows VPS and to find other hosting services, please visit http://www.nqhost.com/.

Regular Expressions In Linux

April 29th 2015 Posted at Linux Kernel
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A regular expression, (also known as regexp or regex) is very useful for to match a string of text such as specific words, groups of words or characters.

 

Now, by themselves, regexps don’t do much. But combined with Linux search tools, they are very powerful. Here we’ll use the grep tool with regexps.

 

Now let’s take a look at an example. Say you wanted to find all the lines in a text file that started with the word “Joe” in a text file called bob.txt. You really can’t do this kind of thing with a typical GUI search tool. But with grep and regexp, it’s easy. Well, easy once you get the hang of it!

 

Our file bob.txt contains six lines:
Bob is a great guy
Unlike his buddy, Joe.
Bob likes to work.
Joe is a real bum.
Joe likes to watch other people work.
Jim is my hero.
James is not.

 

Here’s the grep command:

grep ‘^Joe ‘* bob.txt

Output:
Joe is a real bum.
Joe likes to watch other people work.

Notice how only the lines that start with Joe are printed?

The ‘^Joe’* part is the regular expression.

The ^ means start at the beginning of the line.
“Joe” means search for the word Joe.
The * is a wildcard meaning anything can come after Joe.

What if we wanted to match all lines in which the second letter is “o”?

In this case we need to use the. (period), which tells grep to search for any single character.

grep ‘^.o’ bob.txt

Output:
Bob is a great guy.
Bob likes to work.
Joe is a real bum.
Joe likes to watch other people work.

 

The [] brackets, are used to match a range of characters. For example, we could search for any lines that start with a “J” then any letter between a-m.

grep ‘^J[a-m]’ bob.txt

Output:
Jim is my hero.
James is not.

Now, even though Jim starts with a “J”, it is excluded because the second character is not between a-m.

 

I hope this gets you more familiar using regexps. Please be aware that there are several versions of grep and some use slightly different regexp expressions. If you find a great regexp on the internet and it doesn’t work on your system, it may be because it’s not compatible with your particular version of grep. We’ve only touched the surface here, but I hope this gives some understanding of regexps and a hint at how powerful they can be.

 

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A conference by Greg KH (http://en.wikipedia.org/wiki/Greg_Kroah-Hartman) about the Linux kernel development process. March 2015, Paris, France. University Paris Diderot. As Greg said: “It’s…

Linux Reseller Hosting

April 26th 2015 Posted at Linux Kernel
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Linux reseller hosting is all featured with the approbation to be one of the most effective web hosting plans available. Using this type of hosting, innumerable domains can be easily hosted on the Linux servers. Linux reseller hosting is really affordable and easy to manage and is even accepted and used by a large number of web hosting service providers all across the globe.

The Linux reseller hosting serves to be one among the top hosting plans along with Windows and other famous systems. Reseller hosting having the Linux plan is well liked option among various people and resellers. One of the best features of the Linux host is the fact that it has great amount of ability as far as its speed is concerned. Each hosting program using the Linux system proves to be rich in extra features and is also a cheap way for venturing into the reselling business. The hosting works well with My SQL and PHP scripts as well. The Linux server is known for the dedicated facilities it provides. Being linked with Linux reselling serves to be a good thing for the users as it is really secured. Also, this type of hosting comes with the free software options like APF, Sendmail and Apache.

Because of the Linux server’s high dependability, a large number of businesses and individuals have actually come to have faith in Linux reseller hosting. It is mainly because of good quality of the servers that have actually earned universal appeal among various businesses. There are indeed various plans available from the Linux hosting having different disk space, bandwidth sizes and other additional features.

Some benefits of the Linux reseller hosting include:

State-of-the-art technology with latest equipments such as routers and communicators
Technical problems can be solved easily by using this type of hosting
Linux has also introduced simple proceedings like support and online activation
Linux staff is all committed to offer quality services to clients

Another added benefit of Linux reseller hosting plan is its cost effectiveness. The software product which can be defined as open source, one can access the free software and even download then without any costs. As Linux is even common and more and more web designers use it, there are many hosting service providers that offer the graphic management and easy to navigate control panels. It further makes easier for the people to make alterations with the domain without even learning the technicalities with Linux hosting.

Although Linux servers can not be easy to control and is complex, it is advisable that one evaluates whether the online business will require technologies that are Microsoft powered and is better with the Windows hosting program. As for the developing small based business which can benefit from Linux system’s cost effective value, then the Linux reseller hosting is a smart and reasonable option.

Anand is a webmaster for WHM Reseller visit: resellers-hosting.b4uindia.com

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Freebsd Vps – Is It Suitable For You?

April 26th 2015 Posted at Linux Kernel
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FreeBSD VPS is a new, highly advanced operating system that has gained a lot of popularity in the recent years. Although it has been around for quite some time now and has been extensively studied and researched for years, it is only recently that a lot of people have started using it as they have realized the many benefits that it offers. This operating system is efficient and reliable and is suitable for use for modern servers, desktops and computer platforms. Over the years the technology has been researched and modified by professional teams so that it would be more suitable for a larger user base and so that it can offer more performance, networking and security features.

Why Should Anyone Use It?

There are several reasons why people consider FreeBSD VPS. One of the biggest reasons why this system has gained a lot of advantages is because of the features that it offers. Some of the features that it offers are not even offered by some of the most popular commercial operating systems today. Its compatibility features are not yet matched by any other system. The system offers performance, security and networking advantages. It can work well with intranet and with internet servers and is used by various companies that are looking for a reliable and efficient networking service. This is the only operating system that offers good services even with very heavy load along with the flexibility of running multiple applications.

Who Should Use It?

FreeBSD VPS is a very powerful operating system for development and desktop uses. The main reason why it is used is because it offers various benefits for support, mail, web services and files. It can be especially helpful for the internet servers and is a great choice for network services. Various companies like Yahoo and IBM use this system so there is not much that needs to be said about the performance that it offers. This system is perfect for those who are interested in services that will be reliable even under the most stressful conditions.

If you have been thinking about exploring this particular system it would be important that you first think about your necessities and requirements. You will also have to research to find out the pros and cons of an operating system of this nature. It will be a good system for you if the features that it offers are according to the current requirements of its business. Since FreeBSD VPS is available free of charge, there is no risk involved if you want to try it first.

To get more information about FreeBSD VPS and to find other hosting services, please visit http://www.nqhost.com/.

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Freebsd Vps – Who Should Use It?

April 24th 2015 Posted at Linux Kernel
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Although FreeBSD VPS has been around for nearly 30 years now, not many people are actually aware about what it is and what it has to offer. It has only been recently that it has been in the news constantly and has been talked about all over the world. This is basically a very efficient and a very advanced operating system which can be used for a modern server, embedded computer platforms and for desktops. The system has been studied for nearly 3 decades and is available in its current avatar after years of study, research, improvements, developments and changes. A large number of professionals have worked over this system in order to make it able to provide great networking, performance and security features.

Why Use This System?

FreeBSD VPS should be used for the simple reason that it offers a lot of great benefits. The features which are offered by this operating system are not offered by any other system in the world, even by some of the best commercial ones. Some of the best features of this system is the compatibility features that it offers, advanced networking, superior performance and security. It works well with both, intranet as well as internet servers. This operating system has been popular for offering reliable and efficient networking services. It can provide efficient services even under a very heavy load and it allows multiple application use at once.

Who Should Use It?

FreeBSD VPS can be used as a very powerful development or desktop machine. However, it is known to offer greater benefits for its support, file, mail and web services. It is known mainly for its various advantages that it offers to internet server and it is a great choice as a platform for a network service. Considering the fact that it is used by some of the most well known companies in the world today like Yahoo! And IBM, it definitely offers reliable services even to individual customers.

If you are interested in using FreeBSD VPS on your desktop, you would fist have to understand your system well. It would be the right choice if you want it for the right reasons. Understanding what this operating system offers and what it doesnt offer would be the best way to know if it would work well for you or if would not. One of the best things about it is that it available free of charge. Its simplicity of use is again a major benefit since it allows you to install it as well as upgrade it quite easily without many complications. FreeBSD VPS definitely has many advantages and it can be used by almost anyone.

To get more information about FreeBSD VPS and to find a host of virtual private servers, please visit http://www.nqhost.com/.

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