• May 22, 2022 22 May'22

    Columns vs rows: The difference between rows and columns compared

    Learn the difference between columns vs rows, and learn how the use of rows and columns to organize objects and information in spreadsheets and tables has improved various fields from data ...

  • May 20, 2022 20 May'22

    Docker run vs docker-compose: What's the difference?

    Both docker run and docker-compose can be used to start Docker containers, but there are key differences between the two. Here we explore the differences between docker-compose and docker run, and ...

  • May 19, 2022 19 May'22

    Git commit config and credential confusion causes consternation for customers

    A user who accidentally provides a GitHub username and password instead of the Git username and email address may have inadvertently published their security credentials to the world.

  • May 18, 2022 18 May'22

    When to use Dockerfile vs docker-compose: What's the difference?

    Wondering what's the difference between Dockerfile and docker-compose? Using simple examples, we'll compare not only the Dockerfile and the docker-compose.yaml file, but also the docker build and ...

  • May 17, 2022 17 May'22

    How to setup an Apache reverse proxy server example

    Most enterprise architectures use Apache as a reverse proxy. Unfortunately, Apache is not configured as a reverse proxy by default. In this quick tutorial, we show you how to configure an Apache ...

  • May 17, 2022 17 May'22

    How to use docker-compose with Apache httpd example

    Docker-compose and Apache httpd It's easy to start an Apache Docker image by issuing an imperative docker run command in PowerShell or a Linux terminal window. However, as the docker run command ...

  • May 17, 2022 17 May'22

    How to run Apache Docker httpd images with local files example

    The best way to run Docker's httpd Apache web server image is to map a volume that points to local files on your hard drive. This example shows you how to run Apache in Docker without creating a ...

  • May 17, 2022 17 May'22

    How to dockerize Apache httpd websites example

    Need to dockerize Apache? Want to build a custom Docker httpd image that hosts your website? Here's a simple Apache Dockerfile example to build a custom httpd Docker image for your website.

  • February 14, 2022 14 Feb'22

    Noon is not 12am. Midnight is not 12pm. Code appropriately.

    The terms 12am and 12pm make no logical sense. Neither one is noon or midnight. Remove the 12am vernacular from your applications. Users will thank you.

  • February 08, 2022 08 Feb'22

    How to convert a PEM file to PPK format

    Need to SSH into a remote server with PuTTY but your PEM file just won do the trick? Here's a quick example of how to convert a PEM file to PPK format with PuTTYGen so your SSH sessions with PuTTY ...

  • February 07, 2022 07 Feb'22

    Node.js file upload example with Ajax and JavaScript

    The Node.js file upload process is made easy with libraries like 'fs' and 'formidable.' In this JavaScript and Node.js file upload example, we show you how to move files from the browser to the ...

  • January 26, 2022 26 Jan'22

    How to create an AWS account alias

    Need to create, change or rename an AWS account alias? It's not too hard to do, and your users will thank you. Here are the steps to do it.

  • January 25, 2022 25 Jan'22

    Why is the Bootstrap grid system 12 columns wide?

    Ever wonder why they created a 12-column Bootstrap grid system, and not 10 or 15? It's the same reason there's 60 seconds in a minute, or 360 degrees in a circle.

  • January 21, 2022 21 Jan'22

    Why we use ./ (dot slash) to run Linux scripts?

    Ever wonder why you need a ./ before a Unix shell script or command of your own in order to run it? Here's what the Linux dot slash does and why Unix systems require the ./ syntax.

  • January 21, 2022 21 Jan'22

    Fix Apache's 'ServerRoot Must be a Valid Directory' error quickly

    Here are three easy ways to fix Apache's ServerRoot Must be a Valid Directory error. Any of these remedies will get your Apache HTTP server running again.

  • January 19, 2022 19 Jan'22

    Principle of least privilege examples & best practices

    We see examples of the principle of least privilege everywhere in our daily lives. What does the principle of least privilege mean as applied to security in software development and DevOps?

  • January 16, 2022 16 Jan'22

    Quickly set up GitHub SSH example

    Here's a very quick example of how to setup GitHub SSH keys and use them to perform Git clone, push and pull commands over a securely configured SSH connection.

  • January 15, 2022 15 Jan'22

    How to install Apache's Web Server on Windows 10 quickly

    Let me step you though the installation of Apache's Web Server on Windows 10. You'll learn how to install Apache 2.4 on Windows, and avoid common httpd config errors.

  • January 14, 2022 14 Jan'22

    Top 5 AWS root account best practices

    The credentials of your server's super user must be protected at all costs. Here are five AWS root account best practices to protect yourself from being hacked.

  • January 14, 2022 14 Jan'22

    BitBucket SSH key generation tutorial

    This simple and straight-forward example shows you how to quickly configure BitBucket SSH keys, so you can connect Git to BitBucket with a secure shell (SSH).

  • January 14, 2022 14 Jan'22

    How to create and run a shell script in Linux and Ubuntu

    It's not hard to create and run a shell script in Linux distros like Ubuntu, but there are a few non-obvious pitfalls you need to avoid. Here's a quick example of how to execute a script in Linux.

  • January 13, 2022 13 Jan'22

    Git securely with a GitHub SSH URL example

    Where do you find the GitHub SSH URL? How do you use it to clone or pull from your remote GitHub repository? This quick Git tutorial shows you everything you need to know about the GitHub SSH URL.

  • January 12, 2022 12 Jan'22

    Quick GitHub 'Permission denied (publickey)' SSH error fix

    Here are the three most common fixes to the GitHub 'Permission denied (publickey)' error over SSH.

  • January 11, 2022 11 Jan'22

    A quick GitLab SSH key configuration example

    To connect Git operations securely to your GitLab repository, you will need to configure GitLab SSH keys both locally and remotely. Here's a quick example of how to do it.

  • January 11, 2022 11 Jan'22

    How to SSH into GitHub on Windows example

    Here's a quick tutorial to connect to GitHub with SSH on Windows. It's easy, and you'll establish a GitHub SSH Windows connection with Git in no time.

  • January 11, 2022 11 Jan'22

    A quick GitHub SSH clone example

    Here's a quick example of how to perform a GitHub SSH clone operation. In just five minutes, learn how to create SSH keys, configure them in GitHub and perform the GitHub clone with SSH keys in Git.

  • January 08, 2022 08 Jan'22

    How chmod numbers work explained by example

    Don't let yourself be intimidated by chmod numbers and permissions. Here's a quick and easy to understand explanation of how chmod permission numbers work in Linux.

  • January 05, 2022 05 Jan'22

    Was GitHub's password authentication removal an overstep?

    Was GitHub's removal of password based authentication a security overstep? If it makes it harder for developers to get started with Git and GitHub, it was.

  • January 02, 2022 02 Jan'22

    Git and GitHub SSH KeyGen by Example

    Here's a quick example of how to securely connect Git to GitHub with SSH KeyGen produced secure shell keys on both Windows and Linux.

  • December 31, 2021 31 Dec'21

    How to quickly change your branch in Git

    These Git branch change examples will help you quickly address the specific version control challenge you are trying to solve, be it a branch renaming or a switch, list and checkout of existing ...

  • December 29, 2021 29 Dec'21

    Fix Putty's 'Key Exchange Algorithm Agreement' error

    Ever encounter the 'Couldn't Agree a Key Exchange Algorithm' error when you fail to connect with Putty to an AWS EC2 instance or other server-side resource? This is the first fix you should try.

  • December 28, 2021 28 Dec'21

    Spring Boot file upload example with Ajax

    Do you need to find a Spring Boot file upload that uses Ajax and works with Spring MVC web apps? This example uses HTML5 file input fields and a pure JavaScript Ajax call to accomplish the task.

  • December 25, 2021 25 Dec'21

    Simple Struts 2 file upload example

    In this Struts 2 file upload example we show you to take a local resource and upload it to a remote Java application server. All a developer needs is a file, a browser and an Internet connection ...

  • December 24, 2021 24 Dec'21

    Create an HTML5 and PHP file upload form for Apache

    It's easier than ever for a developer to upload a file with PHP and HTML5 to an Apache web server. This example shows how to create an HTML and PHP file upload component that will work in any ...

  • December 23, 2021 23 Dec'21

    Java file upload example with Servlets, JSPs

    It's not that hard to perform Java file uploads. The new Servlet and JSP API, along with HTML5 input form enhancements, make Java file uploads, both synchronously and asynchronously with Ajax, ...

  • November 29, 2021 29 Nov'21

    How to delete a Git repository

    Trying to delete a local Git repository but the DVCS system still persists? Here's a quick example of how to locally remove a Git repo permanently and completely.

  • November 29, 2021 29 Nov'21

    How to use jarsigner to sign JARs files example

    Here's a quick example of how to use Java's jarsigner to digitially sign JAR files.

  • November 29, 2021 29 Nov'21

    How to use Java's javap tool example

    Need to disassemble a Java class file? Want to look at the bytecode instructions generated from compiling source? These javap tool examples will show you how to use the javap command properly.

  • November 29, 2021 29 Nov'21

    How to import a Maven project from GitHub into Eclipse

    Here's a quick tutorial that shows you how to import a GitHub hosted Maven project into the Eclipse IDE.

  • November 29, 2021 29 Nov'21

    The 5 things devs should know about the Jakarta Servlet 6.0 API release

    Jakarta EE 10 includes a full increment release of the Servlet API. Here are the top 5 features Java devs will enjoy when the Jakarta Servlet 6.0 API arrives.

  • November 02, 2021 02 Nov'21

    How to delete all Git branches except master or main

    Here is a quick Git command to delete all branches except master or main from your local repository. It's a nice way to clean up your workspace after a milestone or a sprint.

  • October 31, 2021 31 Oct'21

    Uncommit Git's Last Commit Example

    Need to do a git uncommit to the last commit you were working on? Learn how to quickly uncommit files updates and changes in Git.

  • October 28, 2021 28 Oct'21

    How to fully delete remote Git branches from GitHub

    Learn the command to properly delete remote Git branches from tools such as GitHub and GitLab, while also deleting local remote tracking branches as well.

  • October 25, 2021 25 Oct'21

    Fix Git's "fatal: no upstream branch" error quickly

    Here's a quick fix for Git's "fatal: The current branch has no upstream branch" error, along with a brief explanation of why this happens when you push a new Git branch to GitHub, GitLab or BitBucket.

  • October 23, 2021 23 Oct'21

    How to discard your local changes in Git

    Don't let a file or two be overlooked when you attempt to remove and discard local, uncommitted changes in Git. Learn how to locally revert and remove uncommitted changes to files in Git properly.

  • October 22, 2021 22 Oct'21

    How to remove Git branches from your repository

    Need to permanently remove a Git branch locally? What about the remote tracking branch? Or maybe someone removed a Git branch on GitHub or GitLab and you need to synchronize with the server? Here ...

  • October 13, 2021 13 Oct'21

    How to rename and change a Git branch name locally & remotely

    Here's a quick example that shows you how to rename a Git branch locally and remotely. The branch renaming commands and techniques will work with GitHub, GitLab, Bitbucket and any cloud based Git ...

  • October 11, 2021 11 Oct'21

    4 examples of how to create a Git branch quickly

    Forgotten the Git branch create command? Here we'l show you four different ways to create a Git branch, be it from the current branch, from a tag or from a commit id.

  • October 10, 2021 10 Oct'21

    How to quickly delete a Git branch locally

    Here's a quick example of how to delete local Git branches from your workstation without deleting remote branches in your GitHub or GitLab repos.

  • October 06, 2021 06 Oct'21

    How to tag a Git commit id by example

    Here's a quick example of how to tag a specific commit id in Git. This is perfect if an older commit id requires a tag but was not originally given one.

  • October 03, 2021 03 Oct'21

    How to push new Git branches to remote repos on GitHub or GitLab by example

    Did you create a new Git branch? Need to push that new Git branch to a remote repo such as GitHub or GitLab? This Git example tutorial shows you how to push new branches to remotes.

  • October 02, 2021 02 Oct'21

    Create a new Git branch with current local changes saved example

    Did you update some code in the wrong Git branch? Here's how to save those local changes in a newly created Git branch, and clean up the original branch in the process.

  • September 14, 2021 14 Sep'21

    All the changes between JDK 11 and the Java 17 LTS release

    Wondering what's included in the new Java 17 LTS release? Here's a list of all the changes made to the JDK between the Java 11 and Java 17 LTS releases.

  • August 31, 2021 31 Aug'21

    Fix GitHub's 'support for password authentication was removed' error

    Frustrated by GitHub's 'support for password authentication was removed' error? Here's how to fix it by creating a personal access token in GitHub.

  • July 20, 2021 20 Jul'21

    How to fork a Git repository

    Looking for the fork command in Git? Well, it doesn’t exist. Here we'll show you how to fork a Git or GitHub repo on your own.

  • July 19, 2021 19 Jul'21

    How to download an older, specific version of UiPath Studio

    Want to stop UiPath Studio from updating to the latest release all the time? Here's how to download and install a specific version of UiPath Studio.

  • July 02, 2021 02 Jul'21

    How to download and install UiPath Studio

    It’s actually a bit tricky to install UiPath. This UiPath Studio install tutorial shows you how to find the download link and the right version.

  • June 30, 2021 30 Jun'21

    How to pass variables as UiPath arguments

    How do you use a variable from one UiPath sequence in another? This tutorial will teach you everything you need to know about passing data between workflows.

  • June 28, 2021 28 Jun'21

    How to use the UiPath Switch activity

    While the UiPath If activity is great for simple logic, multi-branching demands the UiPath Switch activity. Learn how to use it to perform conditional logic.

  • June 25, 2021 25 Jun'21

    UiPath If-Then conditional statements

    Learn how to use the conditional UiPath If activity to create branches of logic in your RPA programs. This quick UiPath If-Then example will show you how.

  • June 20, 2021 20 Jun'21

    What is a Git fork? Meaning, definition and a Git Fork example

    Need to fork GitHub at the command line? This quick Git tutorial will show you how to install the GitHub CLI tools and fork a repository in the shell.

  • June 07, 2021 07 Jun'21

    Delete Windows recovery partition on a Desktop or Lenovo Thinkpad Recovery drive partition removal If you've purchased a laptop from Lenovo or desktop from Asus, there's a good chance there's a hidden recovery partition immediately ...

  • June 03, 2021 03 Jun'21

    Fix the ConcurrentModificationException

    Has the ConcurrentModificationException been thrown in you Java app? Here are four simple ways to fix the ConcurrentModificationException in your code.

  • June 02, 2021 02 Jun'21

    Quickly create a Git bare repo with init or clone

    There are two ways to create a bare Git repo -- a bare Git clone or a Git init bare. This git bare repo tutorial will show you how to perform both.

  • May 28, 2021 28 May'21

    What is a bare Git repository?

    A bare Git repo has all the capabilities of a non-bare repository, with the exception that it’s not meant for local development.

  • May 21, 2021 21 May'21

    How to use git submodules tutorial with examples

    If you’re wondering how to git submodule and logically link repositories together, this git submodule tutorial -- with lots of examples -- is for you.

  • May 21, 2021 21 May'21

    How to update Git submodules

    If your Git submodule is out of sync with the server, we can help. This git submodule update example shows you how to get the latest commits into your worktree.

  • April 30, 2021 30 Apr'21

    How to create Git submodules in GitHub and GitLab

    In this GitHub submodule add example, we demonstrate how to take an independent GitHub repository, add a Git submodule and push back to the GitHub server.

  • April 30, 2021 30 Apr'21

    Yes, the original name for Java was Oak

    When Sun Microsystems first developed a programming language to power their Star7 entertainment controller, they named it Oak, not Java.

  • April 29, 2021 29 Apr'21

    Java's main function explained with examples

    Here's the anatomy of Java's main method. An anachronism with the rise of Servlets and JSPs, Spring Boot and Eclipse Microservice developers are seeing more of Java's main function as apps are ...

  • April 08, 2021 08 Apr'21

    Microsoft previews OpenJDK distro to the delight of devs

    In a move meant to attract more Java developers to its Azure cloud and further support the Java community, Microsoft launched a preview of its own distribution of OpenJDK.

  • April 06, 2021 06 Apr'21

    Supreme Court ruling on Java APIs eases developer worries

    Now that the Supreme Court has ruled for Google over Oracle in their high-stakes copyright battle over Java APIs, developers can rest easier -- but some questions linger.

  • March 30, 2021 30 Mar'21

    How to create a GitHub repository

    This GitHub repository tutorial shows users how to create a new repository in the popular, cloud-hosted Git offering. Let’s dig into the central concepts of GitHub-based DevOps.

  • March 30, 2021 30 Mar'21

    Program a Java factorial function with recursion and iteration

    This Java recursion tutorial shows you how to create a recursive Java factorial function and compares these methods to iterative ones.

  • March 26, 2021 26 Mar'21

    Genuitec's CodeTogether 4.0 promotes pair programming

    With Genuitec CodeTogether 4.0, development teams can work collaboratively even when remote. The product supports pair programming, mob programming and swarm programming.

  • March 25, 2021 25 Mar'21

    AdoptOpenJDK moves to Eclipse Foundation as Adoptium

    The Eclipse Foundation has launched a new working group to provide governance, IP services and developer advocacy for Adoptium, the newly renamed AdoptOpenJDK distribution of the OpenJDK spec.

  • March 24, 2021 24 Mar'21

    Top 5 Java recursion examples

    We often debate the merits of iterative vs recursive Java code. Let’s take a look at 5 Java recursion examples and see where the concept of recursion fits.

  • March 16, 2021 16 Mar'21

    Oracle delivers Java 16 to developers

    Oracle has released Java 16, the latest version of the Java Development Kit (JDK) for developers. The company also moved the OpenJDK source code repositories from Mercurial to Git.

  • February 26, 2021 26 Feb'21

    How to clone from a git tag example

    In this git tag clone example, we’ll demonstrate how to pull from a tag point in your git commit history. However, it comes with a catch, in the form of a detached head.

  • February 26, 2021 26 Feb'21

    How to install Gitflow for Windows on old Git installations

    In some cases, Gitflow will come prepackaged with Git for Windows installations. Those on older installations will need do it manually. Here's a quick guide on how to perform a Gitflow install for ...

  • February 26, 2021 26 Feb'21

    Full Gitflow init workflow example tutorial

    Here's a quick Gitflow init example, along with a quick tutorial on how to perform a full Gitflow workflow after you execute the command.

  • February 24, 2021 24 Feb'21

    The Gitflow release branch process from start to finish

    The Gitflow release branch is the final step in this software development process workflow. Here we look at the start, finish and impact the Gitflow release has on the master, develop and feature ...

  • February 24, 2021 24 Feb'21

    Gitflow hotfix branch example from start to finish

    If you’re lucky, you’ll never have to start the Gitflow hotfix process. But just in case, here’s a quick example of how to incorporate the Gitflow hotfix branch into your version control workflow.

  • February 03, 2021 03 Feb'21

    Oracle adds GraalVM Enterprise to Java SE subscription

    Oracle's GraalVM Enterprise compiler technology is now available to developers as part of the Java SE subscription. GraalVM increases application performance.

  • January 29, 2021 29 Jan'21

    Java Mission Control 8 Eclipse plugin install

    Here's a quick Java Mission Control tutorial to show you how to install the Java Mission Control Eclipse plugin and start a Java Flight Recorder JVM profile run.

  • January 29, 2021 29 Jan'21

    How to start Java's JVM Flight Recorder in 3 easy ways

    JDK Mission Control is feckless without a Java Flight Recorder file to profile. Here are 3 easy ways you can start Java Flight Recorder in Eclipse and monitor your JVM in JMC.

  • January 29, 2021 29 Jan'21

    How to clone a git repository with submodules init and update

    When you clone a git repository, it won’t necessarily bring down the branches and code for the associated submodules. The git submodule init and update command and the --recurse-submodules switch ...

  • December 29, 2020 29 Dec'20

    The performance cost of autoboxing Java primitive types

    The boxing and unboxing of Java primitive types has severe performance implications. Uncover the truth about autoboxing Java primitive types in this JDK Mission Control and JVM Flight Recorder example.

  • December 28, 2020 28 Dec'20

    A Jenkins YAML pipeline example

    YAML has joined the ranks of declarative and scripted pipelines in Jenkins. Here's an example of what the syntax for a Jenkins YAML pipeline looks like.

  • December 23, 2020 23 Dec'20

    A quick start guide on how to run Jenkins on AWS

    Need to run Jenkins on AWS? It's not a bad idea, especially when developers consider the need for a CI/CD server to integrate with peripheral resources. This quick example shows you the easiest way ...

  • December 06, 2020 06 Dec'20

    How to use Jenkins shared libraries in your pipelines

    Keep complex logic out of your build scripts and take advantage of Jenkins shared libraries instead.

  • November 30, 2020 30 Nov'20

    Quickly publish GitHub Actions artifacts example

    Here's a simple example on how a developer can publish GitHub Actions artifacts for download once a build workflow successfully completes.

  • November 09, 2020 09 Nov'20

    Jenkins Installer for Windows

    The Jenkins installer makes installation of the popular CI/CD tool incredibly easy. Follow these simple steps and you'll have the continuous integration server running on Windows in no time.

  • November 07, 2020 07 Nov'20

    Find Jenkins Home and change the JENKINS_HOME directory location What is Jenkins Home? When Jenkins runs, it stuffs all of its logs, cloned repos, plugin configurations and build artifacts into the Jenkins Home folder. Basically, ...

  • November 01, 2020 01 Nov'20

    How to install Jekyll on Windows 10

    A local install of Jekyll on your Windows machine provides a variety of benefits which range from the ability to use your favorite text editor to fast compilation times. Even if you use GitHub ...

  • October 30, 2020 30 Oct'20

    How and when to perform a git clone depth 1

    In this git clone depth 1 example, we'll walk you through the process of pulling only one commit and one branch back from a remote Git repository.

  • September 30, 2020 30 Sep'20

    How to install Git on Windows tutorial

    Working with GitHub or BitBucket? Then you need to install Git. In this tutorial we show you how to install Git on Windows in 10 easy steps.

  • September 30, 2020 30 Sep'20

    Create a GitHub repository with this step-by-step tutorial

    This step-by-step, tutorial will walk developers through the necessary steps to create a GitHub repository and how to create the cloud-hosted Git repo that acts as the cornerstone for all ...

  • September 29, 2020 29 Sep'20

    8 basic Git commands every GitLab developer must know

    Every developer needs to know a few basic Git commands to become proficient with GitLab. Here are the top eight Git commands every developer must know to be on their way to GitLab mastery.

  • September 13, 2020 13 Sep'20

    How to perform a GitLab delete remote branch operation on a repository

    It's not exactly a straightforward process for developers to have GitLab delete remote branches. In this GitLab tutorial, we'll show you how to remove remote GitLab branches with examples.