Help Me With Install Sign in Oracle

Either. But why don't you go with MapR instead?I have experience with Cloudera training & certification, (which was great, but I'm sure it cost my company quite a lot of money then, given it was classroom training and they had to get Cloudera trainers from abroad). The tag of being a Cloudera Certified Developer for Apache Hadoop definitely certainly gave me confidence and some sense of satisfaction, but I guess what eventually mattered was I got a way to learn Hadoop well.However, not every company (or individual) can afford to pay for such training. Also there isn't much flexibility with time or resources for the learning process.MapR, one of the top ranked Hadoop distributions, offers free on-demand training (see Hadoop On-demand Training Courses). They have a wide variety of courses and the course material is detailed and I found them a bit more interesting (they have some new concepts on FileSystem side, ...) . I've completed a few and it was lot easier to manage my learning. I had the freedom of choosing my time and the topic I wanted to focus on. They have follow-up quizzes after each lesson and eventually one could register for certification.I think this would be a better way to go.p.s. I currently work for MapR. But these are my personal thoughts and based on experiences from before.

Oracle Public Cloud is a huge infrastructure. Let me break them in pieces.Softwares or the services that are actually being used by the customers like Java (or Weblogic Server), Database, MySQL, HCM, CRM or whatever. Now these softwares are developed by specific teams and most of them are independent of each others. These teams actually develop the softwares in traditional way i.e you can take the same softwares that are running on cloud and install in your pc or on premise infrastructure. These products expose some APIs through which they can be used in cloud. So, the language depends on product, but most of the products use JAVA mainly. JAVA is the defacto language in Oracle. But again a single product can use different programming language. MySQL is written in C/C++.The cloud portal or platform through which end user can interact with the softwares. This is the main interface through which you can interact with your services & this is the UI you will see if you register for Oracle Public Cloud. This part is mostly known Oracle Public Cloud platform development. This is mostly unified & the UI is mainly developed using Oracle’s own Javascript Extension Toolkit known as OJET . OJET is a collection of JS frameworks & tools. The backend is mainly developed using JAVA.The underlying programs and scripts that help communication between the services and clients. These scripts basically provision VM, install software, start/stop services etc. These scripts are mainly written in Python along with Perl and shell scripting.Other associated services like accounting, single sign on, metering etc are also part of cloud infrastructure which are again mainly written in JAVA but use lots of languages as per need.Some services may have mobile and desktop clients. So they are written using Java (Android), Swift (iOS), .NET (Windows desktop).You see Oracle Public Cloud is so vast that it is very hard to mention one programming language. Different team uses different programming language as per the requirement. But I can safely say JAVA is the single most used programming language in Oracle Public Cloud development.

"What is a database administrator(DBA) or how to become one?" are the questions people ask me when they find out I am a DBA. I have been working as a DBA for a while and love everything about it. This blog answers both the questions, along with my experience on how I started my career in database.What is a DBA?DBA stands for Database Administrator who is solely responsible for everything listed below and much more. You should have hands-on working knowledge of the following responsibilities in at least one of the relational database management systems to become a DBA.Database Availability: An application pulls data from a database to display or to generate a report. Companies cannot afford the database to remain offline. Without database, the application can't remain online. Database availability is one of the key responsibilities of a DBA.Database Backup: What happens when your hard drive crashes and you do not have a good backup of your documents, pictures, music, etc.? It is important to make a backup of existing database every single day. Making multiple copies of a backup and storing them in different location is a good practice. Hot backup and cold backup are two types of backup strategies for backing up a database. Database backup is automated through a scheduled job which runs nightly or weekly.Database Restore: Restoring is a process of building a database from a backup copy. Backup is done to protect data from data corruption, hardware/media failure or natural catastrophe. Time and again, DBA is required to restore database from a backup to practice restoring process. The successful restore process validates the backup copy is corruptions free which you won't know without restoring it.Database Design: A good database design might take a while but it saves a lot of headache later. Application developer should consult their design with DBA or involve DBA early in their designing process. Good database design makes the applications highly scalable, more maintainable, highly secure, and perform faster.Data Move: Organizations have various need for moving data from one database to another. The most frequent request is to move data from production database to development database in order for the developer to test their application before pushing the change to production. Sometime data movement are done to archive date in a history table, to make a backup of existing data, to store data in data warehouse for reporting and analyzing. Database link, Export-Import, Materialized View, custom script, and SSIS, Informatica are some of the Extract Transport Load (ETL) tools used widely these days.Database Upgrade: You all might have a smartphone with Android, Windows, or IOS Operating System. Every year or so, they release a new version of OS and we are notified to upgrade to the latest and greatest version of OS. The newer version covers all or most of the problems which older version had and may add few more features. Similarly, DBAs are required to upgrade their database with a newer version of database. However, I will wait few months before upgrading to a new version. Oracle and SQL server won’t provide support if you are running your database on older version.Database Patch: Database is a software which can never be a perfect. The database company constantly works on to improve or secure their product. Database vendor release a patch to resolve a known bug, add features or to tighten the security. DBA are required to monitor these patch releases from these vendors, test it and apply to their databases.Train Developer: Application and Developers are frequent users of your databases. Developers are your client. They are very good at what their title states but may not have good exposure to database best practices. Database administrators are the ones who should educate the developers about database best practices and standards, do's and don'ts. The correct design from early on will help DBA and Developer in the long run. Both database and applications are more manageable, faster and secure when the database design is correct.Query Tuning: Tuning is a process of making your query run faster without putting extra overhead to database. Tuning a SQL query is an art that comes with experience. Following correct database practices, knowing the data, and the query result helps you to write the most optimized query. Most databases come with a tool to display how the db is executing your query. The simple rule is to avoid table scan and make the query use index where possible. Again, this depends on the data size and the query result. Materialized view is another database object to make your query faster. How do you gain performance using materialized view? Not all query can become faster using materialized view. The query that does calculation benefits the most. Instead of running the calculation every time the query is executed, Materialized view stores the result. Query re-write, use of cursor, temp table, or database re-design are few ways to make your query run like a champs.Database Tuning: It is a process done to optimize the performance of a database. This is strictly done by a system dba on a db and server level. Adjusting temp database size, requesting proper memory, processor, hardware and database configurations are some of the examples of database tuning. This is done to run your query fast without much overhead. This is an ongoing process and a DBA should always looks for ways to improve the performance.Database Security: Security is a top priority for any company. Is your database secure? You have heard the horror stories about Sony,Target, eBay etc. They are experiencing a bsignNow in customer accounts including Credit Cards, Social Security number, email. DBAs team should always work with security team to ensure they are in compliance and the db is secure for both external attack and internal attack. Creating a database user account with a minimum privilege is one way to protect the database from internal database users. Security is a complex topic and most companies these days employ full-time DBA just to protect database from vulnerability, malware, and cyber-attack.Capacity Planning: Capacity planning accommodates for future growth. The growth can be a database users, applications users, or data itself. DBA needs to make sure that they have enough disk space, memory, processor, and bandwidth to support the company's growth. It is always good to overestimate than underestimate it. Poor planning can cost you a job, the database may not perform at its optimal, and may crash anytime.Database Monitoring: Monitoring is done to ensure the database is running without a problem. I normally monitor db when I am running complex queries, building indexes, moving data, etc. You can monitor the database jobs, table lock, I/O, and the problem queries. Monitoring is done to identify problem queries. Each database comes with a tool to monitor it or there are after market tools you can use for free or some fee.Error Log Review: Error logs are where the errors are spit out and every database management system has it. DBA should review and monitor early in the morning and throughout the day. Anywhere you see error, you should fix it asap. Reviewing the error logs is one way to find out the problem queries. A good DBA will send a page to themselves or to the team when the word “error” is logged in a log file.And Much More: DBA roles and responsibilities do not end here. The above mentioned bullet points are just some of the core responsibilities of a DBA. Occasionally, DBAs are required to work with system administrator, network administrator and some other IT department to help the troubleshoot. DBA should have the good knowledge of Operating Systems and IT networking concepts. DBAs are required to know scripting languages like shell scripting, awk, and Linux command to automate the task. Knowing the programming languages that your developer use is your company is a huge bonus.How To Become A DBA?The easy part of defining the roles and responsibilities of a DBA is done. Now, this section talks about how you are going to master these responsibilities and become a DBA.Database Installation: Everyone who wants to learn database must install a relational database management systems like Oracle, Sql Server, or MySQL in their home PC. These are some of the popular relational databases in market. Each company makes a free lightweight version for you to try like Oracle Express, SQL Server Express or MySQL. Decide the one you would like to learn and install it. Installing express edition is easy and you will find the installing instructions from their sites or you can search online for instructional videos if you prefer to learn by watching.Learn SQL: SQL stands for Structure Query Language for accessing database. Learning SQL is the first step towards becoming a database professional. You are required to know data definition language(DDL) and data manipulation language (DML). DBA uses SQL all the time. SQL is a query language that works with most Relations DBMS systems available. This is like “learn once and apply in all DBMS” technology. I cannot stress enough on how important it is to learn SQL before you begin to learn DBA work. W3schools is my one stop go-to bible for learning SQL. I recommend w3schools to anyone who wish to learn, it is easy to follow and completely free to use.Database Concepts: What are database concepts? You have picked your horse, now is the time to ride it. Learn the architecture of the database you installed. Know how your query are processed and executed. Get yourself familiar with the database concepts like primary key, foreign key, database integrity, database logs, indexes, views, and synonyms, backup and restore error code and messages, etc. There's no way I can list them all. I recommend reading books on database concepts. Books are more organized versus looking up online. Again, these concepts are the not database specifics, therefore you can apply these concepts on any relational DBMS. I started out with Oracle. Now, I manage SQL Server and MySQL. The concepts that I learned with Oracle still applies to these databases with minor differences.Online Document: Database companies like Oracle, DB2, and SQL Server have their official sites with technical documents and white papers. These documents cover the db features, syntax, how-to's, and everything that DBA and developers required to know to perform their tasks. You will need to get familiar with these documents. These documents are detailed and very long to follow.With practice and experience you will know what and where to look in a document. If you are learning Oracle DBA, you should get familiar with Oracle documents through their reference page. Do not refer to third party sources like blogs while you are learning. They may not have the latest and greatest information. Blogs or other unofficial sites are something you will want to navigate later. I would always refer to official documents which as are kept up-to-date with least errors.Practice, Practice, and More Practice: You have installed a database of our choice, learned SQL, understood database concepts and architecture, and got familiar with the official online documents. If you are reading this, then you made a big commitment to become a DBA. Now is the time to get your hands dirty. Here, you practice to make a backup & recovery, database design, data migration, upgrade, database and query tuning, monitoring, and everything that was discussed under roles and responsibilities.Online Training: Whatever you did so far is good enough to get a job as a junior DBA. In order to get a step further but now you need to lean more. You have done so much to get here and the journey does not stop here. You will need to further enhance your knowledge but you must be tired already to learn own your own. Now is the time to find a trainer. I usually use an online trainer because it saves time and I can get the training done from the comfort of my home. Find the best trainer and learn it from the best. Don't be afraid of paying extra; you will know why they are charging more after the training.User Group: You have jobs that you are comfortable with. The online training is done. You will need to keep yourself updated on database technologies which changes so fast. Around your city find the user group like Oracle or SQL Server or whatever db you are going to administer. Sign up and participate in their monthly meetings and workshops. This is where you will meet and network with professionals like you. What do they do in User Group meetings? The user group discusses the problem that their company is having or the new product launch or database best practices, etc. This is a good place to ask questions and answer anything you know. You will learn more by asking and answering questions.Reading & Writing Blogs : Remember, I asked you to hold off on reading blogs, but now is the time to navigate a good blog and start following it. Blogs will teach you the tips and tricks and the real production issues. This is how blogs are different from the online documents.I enhance my knowledge is by sharing with the communities and this is how my blog was born. You can start blogging about the problems and the projects you worked on. There are free blogging sites that you can get started in minutes. Blogger and WordPress are two popular blogging sites that are easy and free to use.Other: The other ways of learning involve talking to senior DBA of a company, Twitter, Facebook page, Google plus, attending annual conferences, training, certifications, and workshops. If you are still alive, you will make a good DBA!!My Own ExperienceAren't you excited to know how I made my career into a database? Right after college, I applied for several DBA positions and guess what I got? Too many rejections, which I called them love letters. I wasn't even called for an interview. That was a depressing moment that I had to go through right after graduation. I thought I have done something wrong somewhere. Later on, I found out that I had no prior industry experience on database nor any projects in school that were related to database.Clearly, whatever I learned in school wasn't enough to get a job. There were no internships or entry-level DBA positions which I could apply for. Even today, not many companies offer entry-level DBA or database developer positions because they don’t want any newbies playing with their data. Data is the most valuable asset of any organization, and without data, they are nothing. I now know exactly why the hiring managers are scared of hiring entry level database administrators.By that time, I had realized there was no way of getting a position in database and that I needed to focus on something where they would take fresh graduates. During my undergraduate school, I had to take tons of programming classes even though I never enjoyed the projects & assignments. After revamping my resume, I was able to land in an application developer position in a reputed corporation.As an application developer, I got exposed to various programming languages, internal tools, databases, great mentors, and some training opportunities. I enjoyed the developer position which was more fun than my school projects. I made my way up to a senior developer position after few years. While working on application development projects, I had to work closely with DBA, System Admin, and IT nerds from other department. This gave me an opportunity to explore different DBA roles and responsibilities. After showing interest in DBA position, the DBA manager let me shadow his team and this eventually helped me make an informed decision to pursue a career in database.I also completed Oracle Database System Certification course from a Community College while working full-time. In addition to this, I installed Oracle database and practiced what my DBA taught me. I started exploring online Oracle communities, Oracle blogs, and online documents. These helped me learn a lot about DBA work even though I wasn't working as one. It took me 6 full years to land into a database career, but I thoroughly enjoyed the journey that I took to get there. I am now a DBA and a mentor for a top company in the United States.Database Administrator is a hot career and makes a fairly good starting salary. If you are still reading this article, you have learned that there is no easy way to become a DBA. Becoming a DBA requires a lot of hard work, practice, a learning mindset, and patience. Do not get discouraged. Just work hard and stay focused. You can get to where you want in your career. Learning to become a dba is not rocket science and it is not a brain surgery. It is database, nothing morePS: I unpack more database tips and tricks in www.dbarepublic.com

The 100 Rules for Being a First-Time EntrepreneurIf you Google “entrepreneur” you get a lot of mindless cliches like “Think Big!” For me, being an “entrepreneur” doesn’t mean starting the next “Faceook”. Or even starting any business at all.It means finding the challenges you have in your life, and determining creative ways to overcome those challenges. However, in this post I focus mostly on the issues that come up when you first start your company. These rules also apply if you are taking an entrepreneurial stance within a much larger company (which all employees should do).Just as good to be an “entreployee” as an “entrepreneur”. Either one will help you survive this world of increased economic uncertainty.For me, I’ve started several businesses.Maybe 17 have failed out of 20. I fail quickly. I fail frequently. Entrepreneurship is a sentence of failures punctuated by brief success.I’m invested in about 28 private companies. I’ve advised probably another 50 private companies. I’m on the board of several private companies and one public company. The companies ranging from $0 in revenues to a billion in revenues.Along the way I’ve compiled a list of rules that have helped me deal with every aspect of being an entrepreneur in business and some in life.Here’s the real rules:A)        It’s not fun. I’m not going to explain why it’s not fun. These are rules. Not theories. I don’t need to prove them.But there’s a strong chance you can hate yourself throughout the process of being an entrepreneur. Keep sharp objects and pills away during your worst moments. And you will have them. If you are an entrepreneur and agree with me, please note this in the comments below.B)        Try not to hire people. You’ll have to hire people to expand your business. But it’s a good discipline to really question if you need each and every hire.C)       Get a customer. This seems obvious. But it’s not. Get a customer before you start your business, if you can.So many people say to me, “I have an idea. Can you introduce me to VCs?”There is a HUGE gap between “idea” and “professional venture capital”.In the middle of that gap is “customer”.D)        If you are offering a service, call it a product.Oracle did it. They claimed they had a database. But if you “bought” their database they would send in a team of consultants to help you “install” the database to fit your needs.In other words, for the first several years of their existence, they claimed to have a product but they really were a consulting company. Don’t forget this story. Products are valued higher than services.And almost EVERY major software product company was a service company in the beginning. Don’t forget that.E)       It’s OK to fail. Start over. Hopefully before you run out of money. Hopefully before you take in investor money. Or, don’t worry about it. Come up with new ideas. Start over.F)         Be profitable. Try to be profitable immediately. This seems obvious but it isn’t. Try not to raise money. That money is expensive.G)        When raising money: if it’s not easy then your idea is probably incapable of raising money. If its easy, then take as much as possible. If its TOO easy, then sell your company (unless you are Twitter, etc).(if its too easy, sell your company)H)        The same goes for selling your company. If it’s not easy, then you need to build more. Then sell. To sell your company, start getting in front of your acquirers a year in advance. Send them monthly updates describing your progress. Then, when they need a company like yours, your company is the first one that comes to mind.Don’t be like that guy in the TV show “Silicon Valley”. If someone offers you ten million for a company that has no revenues, then sell it. Not everything is going to be a Facebook. And even the Google guys tried to sell their company for ONE MILLION DOLLARS to Yahoo before they were revenue positive.SELL THE COMPANY.I)          Competition is good. It turns you into a killer. It helps you judge progress. It shows that other people value the space you are in. Your competitors are also your potential acquirors.J)         Don’t use a PR firm. Except maybe as a secretary. You are the PR for your company. You are your company’s brand. You personally.I’ve never had a good PR company. I’ve had good PR secretaries. But they are cheaper. One time I hired a PR company and they accidentally sent me the contract for Terry Bradshaw. He was paying $10,000 a month. How did they do for him?K)        Communicate with everyone. Employees. Customers. Investors. All the time. Every day.Employees want to know what to do. And they want to know you are thinking of their overall career.Customers want to know how to keep their bosses calm.Investors want to be your friend and want to know they can count on you when time’s are tough.L)         Do everything for your customers. This is very important.Get them girlfriends or boyfriends. Speak at their charities. Visit their parents for Thanksgiving. Help them find other firms to meet their needs. Even introduce them to your competitors if you think a competitor can help them or if you think you are about to be fired. Always think first, “What’s going to make my customer happy?”Note: EVEN if that means introduce them to a competitor. If you are the SOURCE, then everybody comes back to the source.M)        Your customer is not a company. There’s a human there. What will make my human customer happy? Make him laugh. You want your customer to be happy.N)        Show up. Go to breakfast/lunch/dinner with customers. Treat.O)        History. Know the history of your customers in every way. Company history, personal history, marketing history, investing history, etc.P)         Micro-manage software development. Nobody knows your product better than you do. If you aren’t a technical person, learn how to be very specific in your product specification so that your programmers can’t say: “well you didn’t say that!”Q)        Hire local. You need to be able to see and talk to your programmers. Don’t outsource to India. I love India. But I won’t hire programmers from there while I’m living in the US.R)        Sleep. Don’t buy into the 20 hours a day entrepreneur myth. You need to sleep 8 hours a day to have a focused mind.If you are working 20 hours a day, then that means you have flaws in how you are managing your time. You can argue about this but it’s true.S)         Exercise. Same as above. If you are unhealthy, your product will be unhealthy.T)         Emotionally Fit. DON’T have dating problems and software development problems at the same time. VCs will smell this all over you.U)        Pray. You need to. Be grateful where you are. And pray for success. You deserve it. Pray for the success of your customers. Heck, pray for the success of your competitors. The better they do, it means the market is getting bigger. And if one of them breaks out, they can buy you.V)       Buy your employees gifts. Massages. Tickets. Whatever. I always imagined that at the end of each day my young, lesbian employees (for some reason, most employees at my first company were lesbian) would be calling their parents and their mom and dad would ask them: “Hi honey! How was your day today?” And I wanted them to be able to say: “It was the best!” Invite customers to masseuse day. W)       Treat your employees like they are your children. They need boundaries. They need to be told “no!” sometimes. And sometimes you need to hit them in the face (ha ha, just kidding). But within boundaries, let them play.X)        Don’t be greedy pricing your product. If your product is good and you price it cheap, people will buy. Then you can price upgrades, future products, and future services more expensive. Which goes along with the next rule.Y)        Distribution is everything. Branding is everything. Get your name out there, whatever it takes. The best distribution is of course word of mouth, which is why your initial pricing doesn’t matter.Write a blog about your industry and be very honest about all the flaws (even your own) that is currently in your industry.Authenticity is the best branding.Z)         Don’t kill yourself. It’s not worth it. Your employees need you.Your children or future children need you. It seems odd to include this in a post about entrepreneurship but we’re also taking about keeping it real.Most books or “rules” for entrepreneurs talk about things like “think big”, “go after your dreams”. But often dreams turn into nightmares. I’ll repeat it again. Don’t kill yourself. Call me if things get too stressful. Or more importantly, make sure you take proper medicationAA)     Give employees structure. Let each employee know how his or her path to success can be achieved. All of them will either leave you or replace you eventually. That’s OK. Give them the guidelines how that might happen. Tell them how they can get rich by working for you.BB)      Fire employees immediately. If an employee gets “the disease” he needs to be fired. If they ask for more money all the time. If they bad mouth you to other employees. If you even think they are talking behind your back, fire them.The disease has no cure. And it’s very contagious. Show no mercy. Show the employee the door. There are no second chances because the disease is incurable.I don’t say this because I want anyone to be hurt. But if you’ve followed the rules above then you are treating employees well already. NOBODY should spread the disease and badmouth you or your customers.CC)      Make friends with your landlord. If you ever have to sell your company, believe it or not, you are going to need his signature (because there’s going to be a new lease owner)DD)     Only move offices if you are so packed in that employees are sharing desks and there’s no room for people to walk.EE)      Have killer parties. But use your personal money. Not company money. Invite employees, customers, and investors. .FF)       If an employee comes to you crying, close the door or take him or her out of the building. Sit with him until it stops. Listen to what he has to say. If someone is crying then there’s been a major communication breakdown somewhere in the company. Listen to what it is and fix it. Don’t get angry at the culprit’s. Just fix the problem.(you don’t want your employees to be sad.)GG)     At Christmas, donate money to every customer’s favorite charity. But not for investors or employees.HH)     Have lunch with your competitors. Listen and try not to talk. One competitor (Bill Markel from Interactive 8) once told me a story about how the CEO of Toys R Us returned his call. He was telling me this because I never returned Bill’s calls. Ok, Bill, lesson noted.II)        Ask advice a lot. Ask your customers advice on how you can be introduced into other parts of their company. Then they will help you. Because of the next rule…JJ)        Hire your customers. Or not. But always leave open the possibility. Let it always dangle in the air between you and them. They can get rich with you. Maybe. Possibly. If they play along. So play.KK)     On any demo or delivery, do one extra surprise thing that was not expected. Always add bells and whistles that the customer didn’t pay for.This is such an easy way to over deliver I’m surprised people don’t do it 100% of the time. They do it maybe 1% of the time. So this is an easy way to compete and surprise and delight.LL)      Understand the demographic changes that are changing the world. Where are marketing dollars flowing and can you be in the middle. What services do aging baby boomers need? Is the world running out of clean water? Are newspapers going to survive? Etc. Etc. Read every day to understand what is going on.LLa) Don’t go to a lot of parties or “meetups” with other entrepreneurs. Work instead while they are partying.MM)    But, going along with the above rule, don’t listen to the doom and gloomers that are hogging the TV screen trying to tell you the world is over. They just want you to be scared so they can scoop up all the money.NN)     You have no more free time. In your free time you are thinking of new ideas for customers, new ideas for services to offer, new products.OO)     You have no more free time, part 2. In your free time, think of ideas for potential customers. Then send them emails: “I have 10 ideas for you. Would really like to show them to you. I think you will be blown away. Here’s five of them right now.”OOa) Depressions, recessions, don’t matter. There’s $15 trillion in the economy. You’re allowed a piece of it:FedEx, Microsoft, HewlettPackard, and many huge companies were started in recessions or depressions. Leave economics to the academics while they leave good business to you.PP)       Talk. Tell everyone you ever knew  what your company does. Your friends will help you find clients.QQ)     Always take someone with you to a meeting. You’re bad at following up. Because you have no free time. So, if you have another employee. Let them follow up. Plus, they will like to spend time with the boss. You’re going to be a mentor.RR)      If you are consumer focused: your advertisers are your customers. But always be thinking of new services for your consumers. Each new service has to make their life better. People’s lives are better if: they become healthier, richer, or have more sex. “Health” can be broadly defined.SS)       If your customers are advertisers: find sponsorship opportunities for them that drive customers straight into their arms. These are the most lucrative ad deals (see rule above). Ad inventory is a horrible business model. Sponsorships are better. Then you are talking to your customer.TT)      No friction. The harder it is for a consumer to sign up, the less consumers you will have. No confirmation emails, sign up forms, etc. The easier the better.TTA) No fiction, part 2. If you are making a website, have as much content as you can on the front page. You don’t want people to have to click to a second or third page if you can avoid it. Stuff that first page with content. You aren’t Google. (And, 10 Unusual Things You Didn’t Know About Google)UU)     No friction, part 3. Say “yes” to any opportunity that gets you in a room with a big decision maker. Doesn’t matter if it costs you money.VV)     Sell your company two years before you sell it. Get in the offices of the potential buyers of your company and start updating them on your progress every month.  Ask their advice on a regular basis in the guise of just an “industry catch-up”WW)    If you sell your company for stock, sell the stock as soon as you can. If you are selling your company for stock it means:a.         The market is such that lots of companies are being sold for stock.b.         AND, companies are using stock to buy other companies because they value their stock less than they value cash.c.         WHICH MEANS, that when everyone’s lockup period ends, EVERYONE will be selling stock across the country. So sell yours first.XX)     Execution is a dime a dozen. If you have an idea worth pursuing, then just make it. You can build any website for cheap. Hire a programmer and make a demo. Get at least one person to sign up and use your service. If you want to make Facebook pages for plumbers, find one plumber who will give you $10 to make his Facebook page. Just do it.Fail quickly. Good ideas are HARD. It’s execution that is a dime a dozen.YY)     Don’t use a PR firm, part II. Set up a blog. Tell your personal stories (see “33 tips to being a better writer” ). Let the customer know you are human, approachable, and have a real vision as to why they need to use you. Become the voice for your industry, the advocate for your products. If you make skin care products, tell your customers every day how they can be even more beautiful than they currently are and have more sex than they are currently getting. Blog your way to PR success. Be honest and bloody.ZZ)      Don’t save the world. If your product sounds too good to be true, then you are a liar.ZZa) Your company is always for sale.AAA)  Frame the first check. I’m staring at mine right now.BBB)   No free time, part 3. Pick a random customer. Find five ideas for them that have nothing to do with your business. Call them and say, “I’ve been thinking about you. Have you tried this?”CCC)   No resale deals. Nobody cares about reselling your service. Those are always bad deals.DDD)   Your lawyer or accountant is not going to introduce you to any of their other clients. Those meetings are always a waste of time.EEE)    Celebrate every success. Your employees need it. They need a massage also. Get a professional masseuse in every Friday afternoon. Nobody leaves a job where there is a masseuse.FFF)     Sell your first company. I have to repeat this. Don’t take any chances. You don’t need to be Mark Zuckerberg. Sell your first company as quick as you can. You now have money in the bank and a notch on your belt. Make a billion on your next company.Note Mark Cuban’s story. Before he started Broadcast and rode it to a few billion, he sold his first software company for ten million.GGG)   Pay your employees before you pay yourself.HHH)   Give equity to get the first customer. If you have no product yet and no money, then give equity to a good partner in exchange for them being a paying customer.  Note: don’t blindly give equity. If you develop a product that someone asked for, don’t give them equity. Sell it to them. But if you want to get a big distribution partner whose funds can keep you going forever, then give equity to nail the deal.III)       Don’t worry about anyone stealing your ideas. Ideas are worthless anyway. It’s OK to steal something that’s worthless.IIIA) Follow me on twitter.Questions from ReadersQuestion: You say no free time but you also say keep emotionally fit, physically fit, etc. How do I do this if I’m constantly thinking of ideas for old and potential customers?Answer:  It’s not easy or everyone would be rich.Question: if I get really stressed about clients paying, how do I get sleep at night?Answer: medicationQuestion: how do I cold-call clients?Answer: email them. Email 40 of them. It’s OK if only 1 answers. Email 40 a day but make sure you have something of value to offer.Question: how can I find cheap programmers or designers?Answer: if you don’t know any and you want to be cheap: use Hire Freelancers & Find Freelance Jobs Online, Elance, or craigslist. But don’t hire them if they are from another country. You need to communicate with them even if it costs more money.Question: should I hire programmers?Answer: first…freelance. Then hire.Question: what if I build my product but I’m not getting customers?Answer: develop a service loosely based on your product and offer that to customers. But I hope you didn’t make a product without talking to customers to begin with?Question: I have the best idea in the world, but for it to work it requires a lot of people to already be using it. Like Twitter.Answer: if you’re not baked into the Silicon Valley ecosystem,  then find distribution and offer equity if you have to. Zuckerberg had Harvard. MySpace had the fans of all the local bands they set up with MySpace pages. I (in my own small way) had Stock Market - Business News, Market Data, Stock Analysis - TheStreet when I set up Stockpickr! Your Source for Stock Ideas. I also had 10 paying clients when i did my first successful business fulltime.Question: I just lost my biggest customer and now I have to fire people. I’ve never done this before. How do I do it?Answer:  one on meetings. Be Kind. State the facts. Say you have to let people go and that everyone is hurting but you want to keep in touch because they are a great employee. It was an honor to work with them and when business comes back you hope you can convince them come back. Then ask them if they have any questions. Your reputation and the reputation of your company are on the line here. You want to be a good guy. But you want them out of your office within 15 minutes. It’s a termination, not a negotiation. This is one reason why it’s good to start with freelancers.Question: I have a great idea. How do I attract VCs?Answer: build the product. Get a customer. Get money from customer. Get more customers. Build more services in the product. Get VC. Chances are by this point, the VCs are calling you.Question: I want to build a business day trading.Answer: bad ideaQuestion: I want to start a business but don’t know what my passion is:Answer: skip to the post: “How to be the luckiest person alive”. Do the Daily Practice. Within six months your life will be completely different.Question: I want to leave my job but I’m scared.Answer: same as above question.  The Daily Practice turns you into a healthy Idea Machine. Plus luck will flow in from every direction.Final rule: Things change. Every day. The title of this post, for instance, says “100 Rules”. But I gave about 70 rules (including the Q&A). Things change midway through. Be ready for it every day. In fact, every day figure out what you can change just slightly to shake things up and improve your product and company.Your business is not your life. When you start a business you also get a cognitive bias that makes you think your business is GREAT.Every day make sure you are not smoking crack. The most important thing is your health so you can be persistent. If you smoke crack you can die.I hope you succeed. Because I really need that smart toilet that sends my doctors text messages after doing urinalysis on my pee every day.Good luck.

Merchant: “You want me to replace my cash register with what?”Specimen of the first POS system, circa 1879.The Point Of Sale industry started in about 1879 with the James Ritty system.  Moving forward the early electronic POS systems were really just electronic cash registers but this changed rapidly.   The premise of current POS industry was originally tied to the rocket ride of technological achievement called Moore’s Law [1].  Moore’s Law really defined the early years.  As the 1980’s approached IBM and NCR dominated the high end of the market segment.  Slowly the middle sized businesses became more amiable to changing from a simple cash register to a cull featured POS system based on the early IBM PC/AT and clones.  This period created an explosion of POS companies and software but far less uptake because of one very large problem.  This problem exists even today:Question: How do you motivate a business to rip out the very heart of the enterprise and invest in, and count on, a new cash register/POS system.Answer:  Salespeople.This is simple and has nothing to do with technology or innovation for that matter.   It has to do with the fact that emotionally human beings have not changed for over 150,000 years or so and they want to sit down with real people and look for the true guidance only a professional salesperson could grant.The only way Micros or NCR grew to dominate the POS industry is through thousands of highly trained salespeople walking and talking through every city, town and hamlet in the US.  It took decades and the dividend payed off in a huge way.  This always bums out my friends in the tech world because “it can’t scale” and ads on the Food Network and Google Pay Per Click ads offer almost zero use in signNowing the real market.  It takes time and real people visiting on real merchants and it is very hard work.Square Wakes Up Larry Ellison To POS Systems And PaymentsOracle wants to be the very heart, nervous system and brain of business and Larry Ellison, love him or not love him has built Oracle brick by brick with over 100+ acquisitions.  This coincidentally is what companies like Square and Groupon were selling to notable VCs and Wall Street.  Square and other payment startups awakened just about the entire world to the promise of payments and POS systems.  To be very clear Larry saw the value of Micros about 6 years ago when he first tried to acquire Micros, and failed.  But today he sees the fact that the market is dominated by Micros and NCR/Radiant and this will not change anytime soon.  The opportunities are quite grand as the two companies will have the largest sales force in the world, perhaps over 100,000+ salespeople when you count all of the contractors and VARs.Additionally  Oracle will open up the possibilities of API connections to realtime merchant data and can form a relationship with companies like Apple to extend the iWallet to a vast majority of very large merchants literally overnight.   Micros would resist really any API relationships famously for the last 20 years.   The charts below show just how massive the combined companies will be:We Don’t Need No Salespeople Here, We Are DisruptorsMeanwhile Larry is having a laugh at the immature philosophies of startups that will do anything but hire true salespeople.  In the case of Square it is clear that Oracle/Micros will expand the market horizontally and vertically all the way down to the micro-merchant and offer a growth pathway as the businesses prosper and need more services and industrial strength solutions.  It is brilliant and perhaps not nearly “disruptive” but will be successful.  Square famously had notable executives state that they “did not need salespeople” and “would hold off until the very last minute hiring even one” Square Is Avoiding Hiring Salespeople.   This immature and insular thinking just may have made certain that Square has a very slim chance to move “up market” to larger and large merchants.  Additionally I and others in 2010 tried to motive Square not to drink from the “disruption” Koolaid glasses and to work with, rather then against existing stake holders.  The response was less then kind to say the least and today this is paying off in a big way for Larry and Oracle. As I mentioned at the start, the POS industry became less then creative and piggish in the cost structures.  The industry began to almost walk backwards from a technology standpoint for most of the 1990s.   This fostered companies like Intuit to produce a small to medium merchant POS system.   Even with Intuit’s millions of merchants, this failed in a spectacular fashion.  Why?  Because they had no real sales force and created a complex and confusing product.   It turned out the great innovations were just one part of the recipe.   When I mentioned this to Square the response was predictable “Intuit’s interface sucks, that is why it failed.”, so be it. Thus as it stands today, the unprecedented amount of media exposure of Jack Dorsey and Square has activated the giants of the world of which Oracle is just one.  Larry will deploy his 100,000+ salespeople and roll into every current Oracle shop and sign up new Micros accounts.  He will then direct these salespeople to every small and medium sized business and create products and solutions that will be at a far lower price point then what almost any company can match.   This by the very nature will make it nearly impossible for a company that was successful with micro-merchants to “Google ad” these business to use their solutions when Oracle-Micros will have a team of local people there to sell, install, train and support a “not so pretty” but industrial strength and time proven POS system with new found Silicon Valley iterations and aggressiveness Oracle will infuse into Micros.  In the next few years Moore’s Law will sweep over the POS industry and Larry Ellison will be in the right place at the right time.______[1] Moore's law

Tomcat will not use your JAVA_HOME environment variable, but look in some predefined locations and in the JAVA_HOME variable set inside the startup script.For this, you need to follow these steps: Open your terminal by pressing Ctrl + Alt + T    2.  Run this command: gksu gedit /etc/default/tomcat7    3.  It will prompt for your password. After entering your password, gedit will open and you will see something like this.   4.  In the highlighted section, remove the comment (remove the '#' sign) and paste the location of tomcat. In this case, /usr/lib/jvm/java-8-oracle I faced the same issue and resolved it. So this will definitely work if you installed using apt-get, I can't vouch for the manual installation but I guess that should work too. But looking at the question details, it looks like you used apt-get.Hope this helps.

The first answer is correct, but I'm a bit puzzled why you asked this question. You could have found the answer much more quickly with automatic tools. I'm going to guess a few reasons why you might have been confused and see if that helps to enlighten you.Windows 8 now includes a built in store for you to buy applications. The JDK is not available on the store. Actually, most applications are not available in the store. That's okay, though; Windows 8 is largely compatible with earlier versions of Windows, and the applications you can get through a web browser are still going to work just fine.This is particularly true for developer tools. Microsoft tries to focus their efforts on making computers easier to use for ordinary, not very bright people (the content on MSN's front page is a great example of this). They don't make a lot of effort to provide easy access to tools for developers in their mainstream channels, because developers know where the back door is.That back door is usually knowing the magic words to type into Google. However, you already know them! "JDK 8 download" would have given you what you want.The other possible source of anxiety is knowing which thing to download, and knowing whether the files you download can be trusted. It helps to know two things: Java is currently owned by Oracle (aka the evil empire of evil), and you should be getting your files from oracle.com. Secondly, the installer should be signed by Oracle, which you will be told before installation starts. If either of these is not true, you may have malware instead. Be aware that even the legitimate installer sometimes offers to install useless crap in addition to Java (see: evil empire of evil), but if you uncheck the relevant boxes it works fine. Read carefully!The last thing is knowing which file on the website to download. For this you need a few more hints:You're using Windows. Don't get the Linux or OS X variants, they won't work.If your machine is 32 bit, get the x86 variant. If your machine is 64 bit, get the x64 variant. 32 bit versions often work on 64 bit machines but they can be slower and limited in their memory usage.If you want tight control of the installation, get the zip file and place the files on your disk manually (this is hard mode). If you want a standard installation and don't mind unchecking the boxes of evil, get the exe or msi version.That's it. Good luck on your Java adventure.

Most software developers do not live in the command-line.A comfortable computer environment is important to just about everyone. Even people who write code. That includes web browsing, documents, and easy access to visual tools to compose software.A programmer can use a Windows PC and run Visual Studio. A perfectly valid choice. Visual Studio is used by millions of programmers. It works.Other programmers have an opportunity to run a different environment. Just like Windows, it is visual and has many of the same amenities. Tools like web browsing. You can get Google Chrome, Mozilla Firefox, and Microsoft Edge for a Linux system. When writing programming documentation for the Web, you need all the same tools you would run for Windows. A basic assortment may include a photo editor, screen capture tool, document editor, and web page designer.A Linux desktop can offer this. Properly setup, that desktop will look similar to Windows 10 but is actually a full Linux OS. A programmer who uses a full Linux OS can be seen sporting a typical user’s desktop.Do not confuse that with my earlier articles about Fedora. This is CentOS 7 running the Cinnamon Desktop. The reason why it looks almost like my Fedora desktop is because I made it look the same.That is power of Linux, you can change between Fedora, Mint, Debian, Red Hat, and CentOS and end up with the same user experience. Each flavor of Linux offers something unique. CentOS and Debian are two that have a great reputation for stability.What Is My Bias?Everyone has a preference. Overall, I think Linux is better than Windows but that does not mean I would not use Windows if the situation required it. Some people like Windows better and if I am in the business of helping them get more out of their computer through software, it is better to help them where they are rather than push an ideal. It is more efficient in the short-term.If someone asks me what I think is better, I try to answer that in a way that preserves their free choice in terms of solutions. Do I think Linux is the best ever? No. However, among practical solutions, it is a better choice, in my opinion, than Windows. If you read this and Windows works for you, remain comfortable in that choice. Linux is another option if it turns out to be more useful. I use it because I find it more useful (versatility / flexibility) and better maintained by the community of upper level programmers, scientists, engineers, and those who study systems.What Have I Used?Nearly all versions of Windows since Windows 3.1 through Windows 10. Windows NT through Windows Server 2016. I used terminal emulators into z/OS and AIX. I used one of the earliest versions of Red Hat and later Red Hat Enterprise many years later. I trialed out Zorin OS, Linux Mint, PC BSD, Solaris, Scientific Linux, Ubuntu Studio, Kubuntu, Lubuntu, Xubuntu, and Oracle Linux.I used Ubuntu on my personal computer for 7 years, Debian for a few months, CentOS for a few months, and Fedora for the last 3 years to present. I have also used Macs professionally but never owned one personally.I estimate I have used 12 versions of Windows desktop in some form and about 6 versions of a server-based version of Windows. I have been on about 8 different releases of Linux across the years. Between mainframe OS, UNIX OS, Windows, and Linux, I have formed an opinion of what works well.I spent many years testing out BSD, various Linux distributions, keeping an eye on Windows and Mac. The question then becomes, what will hold up longest with the fewest issues?Debian as a Fallback PlanIf something weird ever happened to Red Hat, CentOS, or Fedora, I would consider running Debian. Absent that, I do not recommend Debian as a developer’s desktop. When all other options have failed, then Debian, but it is not a good idea to run Debian as the main desktop directly installed to the computer’s native hardware.I am talking about laptops.Debian’s #1 Problem - Hardware compatibility.First and foremost, Debian limits the laptops you can run. BSD has the same problem. Since we are discussing Debian, it is not a good choice because sooner or later, you are going to run into a compatibility issue that requires manual resolution. The type of effort for which people criticize Linux. Debian is guilty of that in terms of system choice.Many Linux distributions seem more at home with a desktop with a wired ethernet port. That is not weird. Actually, most developers would opt for a nice desktop / workstation setup. However, many need a laptop for various reasons and if a laptop is all you got, Debian is not a good choice.Credit is due to the Debian developers however. They are trying. A hardware certification process exists[1] in the Debian sphere. At this date, it does not appear to be at an advanced enough stage yet to substantially impact compatibility in a positive way.Debian’s #2 Problem - Glacial software upgrades.Debian stays in the past when it comes to software versions. That is a great thing when it comes to stability and Debian (stable branch) is solid. Most people who run Debian on a server say it is solid. I think Debian is a good idea for servers and virtual machines but developers need optional access to newer software versions. The ability to update to newer versions but in a stable, supported way is a characteristic of Linux distributions such as Fedora.On a laptop, Debian is not a good idea for developers. As a server or a virtual machine guest environment, it is perfect for those roles. I would still run CentOS as a server but Debian in a virtual environment is great for testing software builds for an audience that uses the Debian environment.CentOS DesktopMost Internet forums I have visited has shown CentOS in a better light[2] than Debian. Granted, most forums are riven with bias and you have to be very careful what you read but the discussions are consistent on this point. CentOS is considered to be more stable and better supported than Debian. Even among Quora forums, you will find an informal consensus towards CentOS in terms of stability[3].CentOS #1 Advantage - Formal Support.Regarding support, that conclusion is irrefutable since CentOS is the by-product of a support centric business plan out of Red Hat[4]. The benefactor for the CentOS project is enterprise oriented. That means they strive to build a solution that meets the demands of a 24/7 operation. A large business or an individual software developer can get support directly from Red Hat if needed (convert CentOS to Red Hat) or partner with a number of organizations that support CentOS professionally.CentOS #2 Advantage - Hardware CertificationThe reality is many of the beneficial aspects of CentOS comes from Red Hat who has an active hardware certification program[5]. The management of this program accrues to systems running a Red Hat related OS such as CentOS and Fedora. You get buy-in from major hardware providers such as Lenovo, HP, DELL, MSI, ASUS, as well as Broadcom, Realtek, Atheros, AMD, and Intel. Due to the long-term nature of hardware support in the Red Hat realm, you get more consistent hardware support and fewer bugs and crashes when updating your systems.CentOS #3 Advantage - Mature Best PracticesThe emphasis is on best practice as opposed to who writes the best software code to create the operating system. Debian software developers as a team are among the best. Their operating system is fast, reliable, and smooth. I like Debian. Their high status in the operating system arena is well deserved.Along with hardware, the top advantage of CentOS and Red Hat operating systems, at this time, is that while the code quality equals Debian, the overall design and approach of the Red Hat affiliated team is more comprehensive in terms of security ,[6] virtualization ,[7] containers[8], application server[9], and lifecycle discipline[10]. Debian simply cannot match that approach with Red Hat’s being the more comprehensive and thoroughly considered in terms of ecosystem and audience.Debian /Ubuntu Desktop AudienceBy now, it is clear that I recommend CentOS in general versus Debian. The only exception to that is if you are dedicated to the Debian/Ubuntu desktop audience and need to live in that environment yourself as a desktop user. However, a disciplined software developer can have a CentOS desktop with Debian and Ubuntu virtual machines to obtain the best of both. That is what I recommend.CentOS vs FedoraA typical user and a software developer have the same choices when it comes to a desktop. CentOS is guaranteed for 11 - 12 years since a Red Hat release generally spans that duration. An entire decade of stability. Depending on the software code you are working on, that could be a great deal.Again, we are talking about your primary operating system that runs directly on your laptop. A 10-year operating system means you can rely on your laptop or desktop for the life of that hardware. CentOS, in most cases, will outlive your hardware. You can have all kinds of virtual machines during that length of time to handle things like testing your code in Debian, Ubuntu, Linux Mint, Fedora, Windows, BSD, etc. That is what you might see in a long-term project situation or an enterprise setup.I used to do it that way, but I wanted more frequent updates on my software and desktop. The problem with CentOS is sometimes it may be too stable. I may want a newer version of a particular software tool I am using whether it is a compiler, IDE, text editor, LibreOffice, Firefox, you name it. Fedora updates more often[11] than CentOS while striving towards stability more than Ubuntu. CentOS is based on the Red Hat release cycle[12]. That is basically the difference between Fedora and CentOS. What really got me off CentOS and onto Fedora was that the latter supported 4K while I would have to wait a longer time before I could see it on CentOS.I recommend CentOS (or Fedora) as better than Debian. CentOS is better.At this point … the answer is finished. The rest is a built-in How-To for the topic.Getting CentOSAt this point I am done conceptually comparing Debian and CentOS. I will switch into a little hand-ons exercise. If you decide you want to do CentOS, the following will show you how to turn command-line Linux into a typical user desktop. After that, we will then add software development to a typical user desktop.Before you read on, understand these 5 things:You don’t have to do it the way I show. This is the long way.You could just download a full DVD ISO for CentOS, skip all the steps I am about to show.I am using a small ISO I use for virtual machines. Remember, I run Fedora so this is an example I put together in a VM.Takes about 1 hour if you imitate my steps.If your Internet capacity and disk space allow, just download the DVD.Stary by downloading CentOS. If you get the minimal ISO, the small one that I use, then you need to follow all the steps shown. If you get the full DVD, then you can skip to the parts where I install Development Tools[13] and Code::Blocks[14]. Optionally, you can install the Cinnamon Desktop.Installing CentOSIf you need to learn how to install a Linux operating system from Windows, then I cover that in my video[15]. Otherwise, I assume you make a bootable USB. We are now at the point where already chose to install CentOS, you created a password for the user accounts and the install is about to finish.LoginType your username [press enter]Type your password (you can’t see it but it is there) [press enter]Get an Internet ConnectionThere is no Internet connection when you install it from the minimal ISO. Like it says, it is minimal. Not even the Internet turns on automatically. Do the following to get CentOS to access the Internet[16].Command: sudo nmtuiOpens up to this screenSelect: Edit a connectionSelect: EditToggle On: Automatically ConnectSelect: OKSelect: QuitReboot and LoginFirst UpdatesNow that Internet is available, go ahead and update.Type: sudo yum upgradeType: yInstall a DesktopType: sudo group install “GNOME Desktop”Type: yInstall Development ToolsType: sudo yum install “Development Tools”[17]Type: yType: sudo systemctl set-default graphical.targetType: sudo rebootGraphical Desktop - GNOMESign into your desktop. It is the same system but with a graphical desktop now.Click Activities in the upper left corner, then select Favorites, then Terminal.We are going to change the look and feel to be more like Windows 10.[18]Type: sudo yum install epel-releaseType: yType: sudo yum group install “Cinnamon Desktop”Type: sudo yum install codeblocksAfter the installs are finished, click the far upper right corner (circle) to shut off computer.Development WorkstationYou are about to sign into a development workstation. First-class, highly stable, now backed by IBM and the accumulated efforts of companies and top software developers around the world. The underlying system (Linux and GNU tools) follow from decades and billions of dollars of hard cash investment spread across the ecosystem to make enable what is about to be shown.Click: Your nameClick: Little gear icon next to the Sign In button. Icon to the left of the button.Choose: CinnamonThis is what it looks like at first.This is what it looks like after you customize the desktop.Software Development with Code::Blocks (or use what you prefer)Code::Block is a C++ IDE where you can write code. It is a visual tool to write software. When you first open it, it gives you an option of which compiler tool chain to tap into.After that, you are in Code::Block and if you select new project, you are ready to make something.ConclusionCentOS, out of the box, is stodgy but stable, boring and plain but ultra reliable. With just a few gears, you can rapidly transform it into a capable developer’s workstation. You can do the same thing with Debian but for the reasons given earlier, CentOS is the better way to go.Footnotes[1] Hardware/Certification - Debian Wiki[2] r/sysadmin - So, is CentOS way more stable than Ubuntu?[3] Which is more stable, CentOS or Debian?[4] Red Hat - Wikipedia[5] https://access.redhat.com/catego...[6] Core difference between SELinux and Apparmor[7] Kernel-based Virtual Machine - Wikipedia[8] OpenShift - Wikipedia[9] Red Hat JBoss Enterprise Application Platform Overview[10] Life Cycle and Update Policies - Red Hat Customer Portal[11] Fedora Release Life Cycle[12] Red Hat Enterprise Linux Life Cycle - Red Hat Customer Portal[13] CentOS 7 or RHEL7 Installing a Development Environment[14] Code::Blocks - Wikipedia[15] Linux Everyday[16] How to setup network after RHEL/CentOS 7 minimal installation - LinTut[17] CentOS 7 or RHEL7 Installing a Development Environment[18] How To Install Cinnamon GUI In CentOS 7 Linux