Linux Unix Training Classes in Allentown, Pennsylvania

Learn Linux Unix in Allentown, Pennsylvania 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 Allentown, Pennsylvania: Linux Unix Training

We offer private customized training for groups of 3 or more attendees.
Allentown  Upcoming Instructor Led Online and Public Linux Unix Training Classes
Enterprise Linux System Administration Training/Class 14 April, 2025 - 18 April, 2025 $2190
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
Linux Fundaments GL120 Training/Class 2 June, 2025 - 6 June, 2025 $2090
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
LINUX SHELL SCRIPTING Training/Class 30 June, 2025 - 1 July, 2025 $990
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
OpenShift Fundamentals Training/Class 28 April, 2025 - 30 April, 2025 $2090
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
RED HAT ENTERPRISE LINUX AUTOMATION WITH ANSIBLE Training/Class 21 April, 2025 - 24 April, 2025 $2735
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
RED HAT ENTERPRISE LINUX SYSTEMS ADMIN I Training/Class 24 March, 2025 - 28 March, 2025 $2090
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
RED HAT ENTERPRISE LINUX SYSTEMS ADMIN II Training/Class 18 August, 2025 - 21 August, 2025 $1890
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
RHCSA EXAM PREP Training/Class 16 June, 2025 - 20 June, 2025 $2090
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration
DOCKER WITH KUBERNETES ADMINISTRATION Training/Class 17 March, 2025 - 21 March, 2025 $2490
HSG Training Center instructor led online
Allentown, Pennsylvania 18102
Hartmann Software Group Training Registration

View all Scheduled Linux Unix Training Classes

Linux Unix Training Catalog

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DevOps Classes

cost: $ 1690length: 3 day(s)
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Foundations of Web Design & Web Authoring Classes

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Java Programming Classes

cost: $ 1390length: 3 day(s)
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Gain insight and ideas from students with different perspectives and experiences.

Blog Entries publications that: entertain, make you think, offer insight

We are not all equally motivated. Some people have more self-drive than other people. This is why we find that some people always end up at the top even when the odds are against them. An employee, with this realization, through the Human Resource department, should be able to design efficient career development systems. For this system to work, the employer must understand the nature of the business environment in which they are operating.

Why Train Employees?

The purpose of training employees is to enable them to grow with time and increase their efficiency. The business world is quite dynamic, nothing stays the same for long. Training one’s employees allows them to keep abreast with the ever changing technological advancements and many other factors that are relevant to his/her line of work. Employees cannot be expected to solve all their employer’s expectations with static skills and techniques. Even the most updated technology becomes obsolete at some point.
People are the biggest assets in organizations. For an establishment to flourish, it is important that the employer understands certain key things that help spur their development.

In a report from the Harvard Business Review, “The Impact of Employee Engagement of Performance,” the most impactful employee drivers are:

It’s the eternal conundrum of a hiring manager – you have to hire for every single position in the company without any first-hand experience. How to do it? If you can have a trusted programmer sit in on the interview, that’s ideal, of course. But what if you’re hiring your first programmer? Or what if you’re hiring a freelancer? Or what if company policy dictates that you’re the only person allowed to do the interviewing? Well, in that case, you need some helpful advice and your innate bullshit detector. We questioned programmers and hiring managers and compiled a list of dos and don’ts. Here are some things to ask when interviewing programmers:

Past Experience

Ask the programmer about the biggest disaster of his career so far, and how he handled it. Did he come in at midnight to fix the code? Was he unaware of the problem until someone brought it up? Did someone else handle it?  According to our programmer sources, “Anyone worth their salt has caused a major meltdown. If they say they haven’t, they’re lying. Or very, very green.” Pushing a code with bugs in it isn’t necessarily bad. Not handling it well is bad.

As usual, your biggest asset is not knowing the field, it is knowing people. Asking about career disasters can be uncomfortable, but if the interviewee is experienced and honest then she won’t have a problem telling you about it, and you will get an idea of how she handles mishaps. Even if you don’t understand what the disaster was or how it was fixed, you should be able to tell how honest she’s being and how she handles being put on the spot.

The original article was posted by Michael Veksler on Quora

A very well known fact is that code is written once, but it is read many times. This means that a good developer, in any language, writes understandable code. Writing understandable code is not always easy, and takes practice. The difficult part, is that you read what you have just written and it makes perfect sense to you, but a year later you curse the idiot who wrote that code, without realizing it was you.

The best way to learn how to write readable code, is to collaborate with others. Other people will spot badly written code, faster than the author. There are plenty of open source projects, which you can start working on and learn from more experienced programmers.

Readability is a tricky thing, and involves several aspects:

  1. Never surprise the reader of your code, even if it will be you a year from now. For example, don’t call a function max() when sometimes it returns the minimum().
  2. Be consistent, and use the same conventions throughout your code. Not only the same naming conventions, and the same indentation, but also the same semantics. If, for example, most of your functions return a negative value for failure and a positive for success, then avoid writing functions that return false on failure.
  3. Write short functions, so that they fit your screen. I hate strict rules, since there are always exceptions, but from my experience you can almost always write functions short enough to fit your screen. Throughout my carrier I had only a few cases when writing short function was either impossible, or resulted in much worse code.
  4. Use descriptive names, unless this is one of those standard names, such as i or it in a loop. Don’t make the name too long, on one hand, but don’t make it cryptic on the other.
  5. Define function names by what they do, not by what they are used for or how they are implemented. If you name functions by what they do, then code will be much more readable, and much more reusable.
  6. Avoid global state as much as you can. Global variables, and sometimes attributes in an object, are difficult to reason about. It is difficult to understand why such global state changes, when it does, and requires a lot of debugging.
  7. As Donald Knuth wrote in one of his papers: “Early optimization is the root of all evil”. Meaning, write for readability first, optimize later.
  8. The opposite of the previous rule: if you have an alternative which has similar readability, but lower complexity, use it. Also, if you have a polynomial alternative to your exponential algorithm (when N > 10), you should use that.

Use standard library whenever it makes your code shorter; don’t implement everything yourself. External libraries are more problematic, and are both good and bad. With external libraries, such as boost, you can save a lot of work. You should really learn boost, with the added benefit that the c++ standard gets more and more form boost. The negative with boost is that it changes over time, and code that works today may break tomorrow. Also, if you try to combine a third-party library, which uses a specific version of boost, it may break with your current version of boost. This does not happen often, but it may.

Don’t blindly use C++ standard library without understanding what it does - learn it. You look at std::vector::push_back() documentation at it tells you that its complexity is O(1), amortized. What does that mean? How does it work? What are benefits and what are the costs? Same with std::map, and with std::unordered_map. Knowing the difference between these two maps, you’d know when to use each one of them.

Never call new or delete directly, use std::make_unique and [cost c++]std::make_shared[/code] instead. Try to implement usique_ptr, shared_ptr, weak_ptr yourself, in order to understand what they actually do. People do dumb things with these types, since they don’t understand what these pointers are.

Every time you look at a new class or function, in boost or in std, ask yourself “why is it done this way and not another?”. It will help you understand trade-offs in software development, and will help you use the right tool for your job. Don’t be afraid to peek into the source of boost and the std, and try to understand how it works. It will not be easy, at first, but you will learn a lot.

Know what complexity is, and how to calculate it. Avoid exponential and cubic complexity, unless you know your N is very low, and will always stay low.

Learn data-structures and algorithms, and know them. Many people think that it is simply a wasted time, since all data-structures are implemented in standard libraries, but this is not as simple as that. By understanding data-structures, you’d find it easier to pick the right library. Also, believe it or now, after 25 years since I learned data-structures, I still use this knowledge. Half a year ago I had to implemented a hash table, since I needed fast serialization capability which the available libraries did not provide. Now I am writing some sort of interval-btree, since using std::map, for the same purpose, turned up to be very very slow, and the performance bottleneck of my code.

Notice that you can’t just find interval-btree on Wikipedia, or stack-overflow. The closest thing you can find is Interval tree, but it has some performance drawbacks. So how can you implement an interval-btree, unless you know what a btree is and what an interval-tree is? I strongly suggest, again, that you learn and remember data-structures.

These are the most important things, which will make you a better programmer. The other things will follow.

The python keyword global is used in a function to distinguish a local representation of a variable with the same name. 

 

glbvar = 0

def setglbvar():
    global glbvar # include this declaration so that updates to glbvar are NOT LOCAL to this function
    glbvar = 1

def printglbvar():
    print glbvar     # No need for global declaration to read value of globvar

setglbvar()
printglbvar()       # Prints 1

Tech Life in Pennsylvania

The first daily newspaper was published in Philadelphia in 1784. In 1946 Philadelphia became home to the first computer. The State College Area High School was the first school in the country to teach drivers education in 1958. Pennsylvania has an impressive collection of schools, 500 public school districts, thousands of private schools, publicly funded colleges and universities, and over 100 private institutions of higher education. The University of Pennsylvania is also the Commonwealth's only, and geographically the most southern, Ivy League school.
Your most unhappy customers are your greatest source of learning. Bill Gates
other Learning Options
Software developers near Allentown 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 Pennsylvania that offer opportunities for Linux Unix developers
Company Name City Industry Secondary Industry
The Hershey Company Hershey Manufacturing Food and Dairy Product Manufacturing and Packaging
Crown Holdings, Inc. Philadelphia Manufacturing Metals Manufacturing
Air Products and Chemicals, Inc. Allentown Manufacturing Chemicals and Petrochemicals
Dick's Sporting Goods Inc Coraopolis Retail Sporting Goods, Hobby, Book, and Music Stores
Mylan Inc. Canonsburg Healthcare, Pharmaceuticals and Biotech Pharmaceuticals
UGI Corporation King Of Prussia Energy and Utilities Gas and Electric Utilities
Aramark Corporation Philadelphia Business Services Business Services Other
United States Steel Corporation Pittsburgh Manufacturing Manufacturing Other
Comcast Corporation Philadelphia Telecommunications Cable Television Providers
PPL Corporation Allentown Energy and Utilities Gas and Electric Utilities
SunGard Wayne Computers and Electronics IT and Network Services and Support
WESCO Distribution, Inc. Pittsburgh Energy and Utilities Energy and Utilities Other
PPG Industries, Inc. Pittsburgh Manufacturing Chemicals and Petrochemicals
Airgas Inc Radnor Manufacturing Chemicals and Petrochemicals
Rite Aid Corporation Camp Hill Retail Grocery and Specialty Food Stores
The PNC Financial Services Group Pittsburgh Financial Services Banks
Universal Health Services, Inc. King Of Prussia Healthcare, Pharmaceuticals and Biotech Hospitals
Erie Insurance Group Erie Financial Services Insurance and Risk Management
Pierrel Research Wayne Healthcare, Pharmaceuticals and Biotech Biotechnology
Unisys Corporation Blue Bell Computers and Electronics IT and Network Services and Support
Lincoln Financial Group Radnor Financial Services Insurance and Risk Management
AmerisourceBergen Wayne Healthcare, Pharmaceuticals and Biotech Pharmaceuticals
Sunoco, Inc. Philadelphia Manufacturing Chemicals and Petrochemicals
CONSOL Energy Inc. Canonsburg Energy and Utilities Gas and Electric Utilities
H. J. Heinz Company Pittsburgh Manufacturing Food and Dairy Product Manufacturing and Packaging

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 Pennsylvania 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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