Linux Unix Training Classes in Suffolk, Virginia

Learn Linux Unix in Suffolk, Virginia and surrounding areas via our hands-on, expert led courses. All of our classes either are offered on an onsite, online or public instructor led basis. Here is a list of our current Linux Unix related training offerings in Suffolk, Virginia: Linux Unix Training

We offer private customized training for groups of 3 or more attendees.
Suffolk  Upcoming Instructor Led Online and Public Linux Unix Training Classes
ANSIBLE Training/Class 24 August, 2020 - 26 August, 2020 $1990
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Linux Troubleshooting Training/Class 20 July, 2020 - 24 July, 2020 $2290
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Enterprise Linux System Administration Training/Class 27 July, 2020 - 31 July, 2020 $2190
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Docker Training/Class 10 August, 2020 - 12 August, 2020 $1690
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
LINUX PERFORMANCE TUNING AND ANALYSIS Training/Class 31 August, 2020 - 3 September, 2020 $2490
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
DOCKER WITH KUBERNETES ADMINISTRATION Training/Class 27 July, 2020 - 31 July, 2020 $2490
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
ENTERPRISE LINUX HIGH AVAILABILITY CLUSTERING Training/Class 3 August, 2020 - 6 August, 2020 $2590
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
HADOOP FOR SYSTEMS ADMINISTRATORS Training/Class 16 November, 2020 - 18 November, 2020 $1890
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
LINUX SHELL SCRIPTING Training/Class 17 September, 2020 - 18 September, 2020 $990
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Introduction to Linux for Developers (LFD211) Training/Class 27 July, 2020 - 28 July, 2020 $930
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Embedded Linux Development with Yocto Project (LFD460) Training/Class 20 July, 2020 - 23 July, 2020 $2800
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Linux Kernel Debugging and Security (LFD440) Training/Class 10 August, 2020 - 13 August, 2020 $2800
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Linux Kernel Internals and Development (LFD420) Training/Class 27 July, 2020 - 30 July, 2020 $2800
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Linux System Administration (LFS301) Training/Class 3 August, 2020 - 6 August, 2020 $2800
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Linux Performance Tuning (LFS426) Training/Class 27 July, 2020 - 30 July, 2020 $2800
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration
Developing Linux Device Drivers (LFD430) Training/Class 3 August, 2020 - 6 August, 2020 $2800
HSG Training Center
Suffolk, Virginia
Hartmann Software Group Training Registration

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Millions of people experienced the frustration and failures of the Obamacare website when it first launched. Because the code for the back end is not open source, the exact technicalities of the initial failings are tricky to determine. Many curious programmers and web designers have had time to examine the open source coding on the front end, however, leading to reasonable conclusions about the nature of the overall difficulties.

Lack of End to End Collaboration
The website was developed with multiple contractors for the front-end and back-end functions. The site also needed to be integrated with insurance companies, IRS servers, Homeland Security servers, and the Department of Veterans Affairs, all of whom had their own legacy systems. The large number of parties involved and the complex nature of the various components naturally complicated the testing and integration of each portion of the project.

The errors displayed, and occasionally the lack thereof, indicated an absence of coordination between the parties developing the separate components. A failed sign up attempt, for instance, often resulted in a page that displayed the header but had no content or failure message. A look at end user requests revealed that the database was unavailable. Clearly, the coding for the front end did not include errors for failures on the back end.

Bloat and the Abundance of Minor Issues
Obviously, numerous bugs were also an issue. The system required users to create passwords that included numbers, for example, but failed to disclose that on the form and in subsequent failure messages, leaving users baffled. In another issue, one of the pages intended to ask users to please wait or call instead, but the message and the phone information were accidentally commented out in the code.

While the front-end design has been cleared of blame for the most serious failures, bloat in the code did contribute to the early difficulties users experienced. The site design was heavy with Javascript and CSS files, and it was peppered with small coding errors that became particularly troublesome when users faced bottlenecks in traffic. Frequent typos throughout the code proved to be an additional embarrassment and were another indication of a troubled development process.

NoSQL Database
The NoSQL database is intended to allow for scalability and flexibility in the architecture of projects that will use it. This made NoSQL a logical choice for the health insurance exchange website. The newness of the technology, however, means personnel with expertise can be elusive. Database-related missteps were more likely the result of a lack of experienced administrators than with the technology itself. The choice of the NoSQL database was thus another complication in the development, but did not itself cause the failures.

Another factor of consequence is that the website was built with both agile and waterfall methodology elements. With agile methods for the front end and the waterfall methodology for the back end, streamlining was naturally going to suffer further difficulties. The disparate contractors, varied methods of software development, and an unrealistically short project time line all contributed to the coding failures of the website.

In programming, memory leaks are a common issue, and it occurs when a computer uses memory but does not give it back to the operating system. Experienced programmers have the ability to diagnose a leak based on the symptoms. Some believe every undesired increase in memory usage is a memory leak, but this is not an accurate representation of a leak. Certain leaks only run for a short time and are virtually undetectable.

Memory Leak Consequences

Applications that suffer severe memory leaks will eventually exceed the memory resulting in a severe slowdown or a termination of the application.

How to Protect Code from Memory Leaks?

Preventing memory leaks in the first place is more convenient than trying to locate the leak later. To do this, you can use defensive programming techniques such as smart pointers for C++.  A smart pointer is safer than a raw pointer because it provides augmented behavior that raw pointers do not have. This includes garbage collection and checking for nulls.

If you are going to use a raw pointer, avoid operations that are dangerous for specific contexts. This means pointer arithmetic and pointer copying. Smart pointers use a reference count for the object being referred to. Once the reference count reaches zero, the excess goes into garbage collection. The most commonly used smart pointer is shared_ptr from the TR1 extensions of the C++ standard library.

Static Analysis

The second approach to memory leaks is referred to as static analysis and attempts to detect errors in your source-code. CodeSonar is one of the effective tools for detection. It provides checkers for the Power of Ten coding rules, and it is especially competent at procedural analysis. However, some might find it lagging for bigger code bases.

How to Handle a Memory Leak

For some memory leaks, the only solution is to read through the code to find and correct the error. Another one of the common approaches to C++ is to use RAII, which an acronym for Resource Acquisition Is Initialization. This approach means associating scoped objects using the acquired resources, which automatically releases the resources when the objects are no longer within scope. RAII has the advantage of knowing when objects exist and when they do not. This gives it a distinct advantage over garbage collection. Regardless, RAII is not always recommended because some situations require ordinary pointers to manage raw memory and increase performance. Use it with caution.

The Most Serious Leaks

Urgency of a leak depends on the situation, and where the leak has occurred in the operating system. Additionally, it becomes more urgent if the leak occurs where the memory is limited such as in embedded systems and portable devices.

To protect code from memory leaks, people have to stay vigilant and avoid codes that could result in a leak. Memory leaks continue until someone turns the system off, which makes the memory available again, but the slow process of a leak can eventually prejudice a machine that normally runs correctly.

 

Related:

The Five Principles of Performance

In Demand IT Skills

Facebook was originally intended as a way for people to stay in touch with friends and family members by sharing pictures and status updates on their timeline. As the website's popularity has grown, so has criticism that it is becoming one giant, online high school.

Online Bullying

There has been a dramatic increase in recent years in the number of online bullying cases due to the introduction of social media. Bullying isn't just limited to younger Facebook users, either. Many adult users have also resorted to bashing others online through nasty status updates and cruel comments.

Prior to social media, bullying in high school involved "kick me" signs and toilet swirling. Facebook and other social media outlets have allowed users to take bullying to a whole other level. Victims can no longer escape bullying by leaving school or work. The torture continues online, at anytime and anyplace.

Status "Likes"

In high school, everyone wants to be part of the popular crowd; people who are outgoing, beautiful, and seem like they have everything.  Posting a status update is similar to wanting to be popular. Once an update is posted, many users wait with bated breath to see how many friends will "like" their status. They believe that the more "likes" they receive, the more popular they are.

If that isn’t enough, there are many Facebook games that involve "liking" someone's status. Games like "Truth Is", where someone likes a status update and in return the poster writes how they really feel about the friend on their Facebook wall. This can get touchy, especially if the two people aren't friends outside of Facebook. It's similar to high school where someone desperately wants another person to like them, but when they find out how that person really feels they are crushed.

Relationships Are Difficult to Keep Private

When someone signs up for Facebook they’re asked to complete their profile, which includes a relationship section. Users can select from different options including "single", "married", "widowed", and "divorced". Whenever someone changes their relationship status, the update shows up on each of their friend's news feeds.

It's easy to see how this feature correlates with high school where everyone talks about who is dating who or which couple broke up. It used to be that after graduation, people were able to keep their relationships more to themselves. Not so anymore in the age of social media. Now everyone has the ability to state their opinion on a friend's relationship status, either by "liking" their status change or by commenting on it.

Facebook has presented many benefits to its users, including the ability to rekindle old high school friendships. What one must understand when they sign up for the service is that they are opening themselves up to the same criticism and drama that takes place in a high school setting.

Proceed with caution!

 
Technology is changing all the time, and the jobs that are associated with technology are changing as well. People that are looking at careers in technology will see some jobs that are being phased out as others increase in popularity. This means that people that are interested in tech jobs should be vigilant in researching those opportunities that are growing in demand.
 
A Dying Breed of Legacy Systems
 
The mainframe programmers i.e., COBOL, have been getting phased out for years, and are reaching retirement age. The demand for these skills are at an end of an era as more technology surfaces with needs for app development and cloud migration. These jobs will be phased out and are being replaced with developers that are knowledgeable in more object-oriented programming positions such as Java, C#, and etc. 
 
Programmers / Analysts
 
Professionals that work in software development, can find work in a number of different tech careers. People that know how to program, particularly in object oriented programming, can expect to be employed and in demand for some time to come. The salaries for programmers range from $50k – millions, depending on the skillsets one has mastered. Like any other profession, one can opt to learn just enough to get by or hone in on a discipline currently in demand and master it, such as data analysts, machine learning analyst and cloud migration specialists.  
 
 
Tech Support for Portable Devices
 
The healthcare industry is seeing a rise in jobs in Information Technology because more hospitals are going paperless. There is a great demand for people that have the ability to work with portable devices because this is what many doctors and nurses will be using as they move away from the long paper trail that has been created from patients. People that have the ability to configure and troubleshoot portable devices like tablets and phones are able to support the applications for these devices will be in high demand. In this case, learning programming languages such a C++ is the perfect route to go in. 
 
 
Technology Trainers 
 
There will always be a need for someone that can learn, utilize and teach proprietary programs to others. Internal proprietary technology will need to be updated which means that technology trainers are expected to be current in the knowledge base for  companies that are utilizing this software. People that are in the training field, will need to stay updated with new technology, grasp new concepts quickly and be able to teach it efficiently. As more companies take hold of proprietary programs, it becomes important for software application trainers to be put in place to teach this technology. 
 
Printer Support Jobs Dwindle
 
People that are working in the technology field of printer support will need to consider looking at other opportunities because some of these printer support jobs will be phased out.  There is a reason for this. More jobs are becoming phased out in the world of printer technology because fewer people are using printers. It has become easier to read the documents and transfer these documents to other workers inside an organization. This means that less money is being spent on printers. Even less money is being spent on printer support. People that have acquired jobs where their primary role is to work in printer repair will see a decline in the number of people that are needed for these types of positions. It becomes a lot less feasible to have printer repair people in place when there is no printer in the office.
 
 
Graphic Design
 
Technology also holds a special place for those that have the experience in graphic design. Websites and social media really engage people in visual art and people that know how to display it on web pages have a plethora of jobs. This leaves this field wide open for those that know about design structures and editing images that can result in eye catching imagery.
 
Wan/ Lan Management
 
One big area that offers an array of different jobs is the area of wide and local network router and switch management. People that are proficient in programming switches and building networks can get themselves a number of jobs dealing with the network topology. Tech careers are booming when it comes to this type of field because many people do not have this experience. They may know how to set up computers, but they may not have any idea about what to do if the network connection is no longer working properly.
 
People that know how to configure switches for networks and troubleshoot these issues with network connectivity will have a wide range of geographical locations that they connect together to build one network for a business.

Tech Life in Virginia

Virginia is known as "the birthplace of a nation,? is nicknamed the "Old Dominion" and has had 3 capital cities, Jamestown, Williamsburg, and Richmond. The state motto is "Sic Semper Tyrannis"??Thus always to tyrants? More people work for the U.S. government than any other industry in this region. Virginia's largest private employer is also the world's largest ship building yard. Because the state hosts some major Net firms such as AOL, Network Solutions, and MCI WorldCom it has dubbed itself the "Internet Capital of the world".
There is a fountain of youth: it is your mind, your talents, the creativity you bring to your life and the lives of people you love. When you learn to tap this source, you will truly have defeated age. Sophia Loren
other Learning Options
Software developers near Suffolk have ample opportunities to meet like minded techie individuals, collaborate and expend their career choices by participating in Meet-Up Groups. The following is a list of Technology Groups in the area.
Fortune 500 and 1000 companies in Virginia that offer opportunities for Linux Unix developers
Company Name City Industry Secondary Industry
Brink's Inc. Richmond Business Services Security Services
Federal Home Loan Mortgage Corporation (Freddie Mac) Mc Lean Financial Services Lending and Mortgage
General Dynamics Corporation Falls Church Manufacturing Aerospace and Defense
CarMax, Inc. Henrico Retail Automobile Dealers
NVR, Inc. Reston Real Estate and Construction Construction and Remodeling
Gannett Co., Inc. Mc Lean Media and Entertainment Newspapers, Books and Periodicals
Smithfield Foods, Inc. Smithfield Manufacturing Food and Dairy Product Manufacturing and Packaging
ManTech International Corporation Fairfax Computers and Electronics IT and Network Services and Support
DynCorp International Falls Church Manufacturing Aerospace and Defense
Genworth Financial, Inc. Richmond Financial Services Insurance and Risk Management
MeadWestvaco Corporation Richmond Manufacturing Paper and Paper Products
Dollar Tree, Inc. Chesapeake Retail Department Stores
Alpha Natural Resources, Inc. Abingdon Agriculture and Mining Mining and Quarrying
SRA International, Inc. Fairfax Business Services Business Services Other
NII Holdings, Inc. Reston Telecommunications Wireless and Mobile
Dominion Resources, Inc. Richmond Energy and Utilities Gas and Electric Utilities
Norfolk Southern Corporation Norfolk Transportation and Storage Freight Hauling (Rail and Truck)
CACI International Inc. Arlington Software and Internet Data Analytics, Management and Storage
Amerigroup Corporation Virginia Beach Financial Services Insurance and Risk Management
Owens and Minor, Inc. Mechanicsville Healthcare, Pharmaceuticals and Biotech Personal Health Care Products
Advance Auto Parts, Inc Roanoke Retail Automobile Parts Stores
SAIC Mc Lean Software and Internet Software
AES Corporation Arlington Energy and Utilities Gas and Electric Utilities
Capital One Financial Corporation Mc Lean Financial Services Credit Cards and Related Services
Sunrise Senior Living, Inc. Mc Lean Healthcare, Pharmaceuticals and Biotech Residential and Long-Term Care Facilities
Computer Sciences Corporation Falls Church Software and Internet Software
Altria Group, Inc. Richmond Manufacturing Manufacturing Other
Northrop Grumman Corporation Falls Church Manufacturing Aerospace and Defense
Alliant Techsystems Inc. Arlington Manufacturing Aerospace and Defense
Markel Corporation Glen Allen Financial Services Insurance and Risk Management

training details locations, tags and why hsg

A successful career as a software developer or other IT professional requires a solid understanding of software development processes, design patterns, enterprise application architectures, web services, security, networking and much more. The progression from novice to expert can be a daunting endeavor; this is especially true when traversing the learning curve without expert guidance. A common experience is that too much time and money is wasted on a career plan or application due to misinformation.

The Hartmann Software Group understands these issues and addresses them and others during any training engagement. Although no IT educational institution can guarantee career or application development success, HSG can get you closer to your goals at a far faster rate than self paced learning and, arguably, than the competition. Here are the reasons why we are so successful at teaching:

  • Learn from the experts.
    1. We have provided software development and other IT related training to many major corporations in Virginia since 2002.
    2. Our educators have years of consulting and training experience; moreover, we require each trainer to have cross-discipline expertise i.e. be Java and .NET experts so that you get a broad understanding of how industry wide experts work and think.
  • Discover tips and tricks about Linux Unix programming
  • Get your questions answered by easy to follow, organized Linux Unix experts
  • Get up to speed with vital Linux Unix programming tools
  • Save on travel expenses by learning right from your desk or home office. Enroll in an online instructor led class. Nearly all of our classes are offered in this way.
  • Prepare to hit the ground running for a new job or a new position
  • See the big picture and have the instructor fill in the gaps
  • We teach with sophisticated learning tools and provide excellent supporting course material
  • Books and course material are provided in advance
  • Get a book of your choice from the HSG Store as a gift from us when you register for a class
  • Gain a lot of practical skills in a short amount of time
  • We teach what we know…software
  • We care…
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