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When you enter a command into your terminal, there are usually options, also called switches or flags, that you can use to modify how the command runs. This is a useful convention defined by the POSIX specification, so as a programmer, it's helpful to know how to detect and parse options.

To remove a file on a computer using a graphical interface, you usually drag a file or a folder to a "trash" or "recycle" bin. Alternately, you might be able to select the file or folder you want to remove, right-click, and select Delete.

To copy a file on a computer with a graphical interface, you usually either drag and drop a file from one window to another window, sometimes using a modifier key. Alternately, you might prefer to right-click on a file icon, select Copy, and then Paste the file icon into another window.

To copy a file in a terminal, you use the cp command, which works exactly like the mv command, except that it duplicates the contents of a file rather than moving them from one location to another.

OpenVPN creates an encrypted tunnel between two points, preventing a third party from accessing your network traffic. By setting up your virtual private network (VPN) server, you become your own VPN provider. Many popular VPN services already use OpenVPN, so why tie your connection to a specific provider when you can have complete control yourself?

To rename a file on a computer with a graphical interface, you open a window, find the file you want to rename, click on its name (or right-click and select the option to rename), and then enter a new name.

To rename a file in the terminal, you actually move the file with mv, but you move the file from itself to itself with a new name.

OpenVPN creates an encrypted tunnel between two points, preventing a third party from accessing your network traffic. By setting up your virtual private network (VPN) server, you become your own VPN provider. Many popular VPN services already use OpenVPN, so why tie your connection to a specific provider when you can have complete control?

Whenever I'm speaking with colleagues and clients near the end of a quarter, I often hear from managers rushing to squeeze their one-on-one meetings with employees into tight deadlines. Every time I ask an employee if they've enjoyed their one-on-one with a manager, the answer is unanimously "no." And every time I ask a manager if they've enjoyed their one-on-one with an employee, the answer is unanimously "no, but I have to do it."

To move a file on a computer with a graphical interface, you open the folder where the file is currently located, and then open another window to the folder you want to move the file into. Finally, you drag and drop the file from one to the other.

To move a file in a terminal, you use the mv command to move a file from one location to another.

OpenVPN creates an encrypted tunnel between two points, preventing a third party from accessing your network traffic. By setting up your virtual private network (VPN) server, you become your own VPN provider. Many popular VPN services already use OpenVPN, so why tie your connection to a specific provider when you can have complete control?

To navigate through the directories of your computer in a graphical interface, you're probably used to opening a window to get "into" your computer, and then double-clicking on a folder, and then on a subfolder, and so on. You may also use arrow buttons or keys to back track.

Have you been connected to an untrusted network such as a hotel or café WiFi and need to securely browse the internet from your smartphone or laptop? By using a virtual private network (VPN), you can access that untrusted network anonymously and as safely as if you were on a private network.

VPN is an amazing tool for safeguarding private data. By using a VPN, you can connect to a private network on the internet while maintaining anonymity.

In a typical push-based deployment, tools like Ansible and Jenkins connect directly to the server or cluster and execute the provisioning commands. This approach works well when the cluster is accessible on the network and there is direct connectivity between your deployment server and the destination server. For compliance or security reasons, connectivity between the deployment tool and the cluster may not be possible.

To open a directory on a computer with a graphical interface, you double-click on a folder. It opens, and you are now "in" that folder.

To open a directory in a terminal, you use the cd command to change your current directory. This essentially opens that folder and places you in it.

To list files on a computer with a graphical interface, you usually open a file manager (Files on Linux, Finder on MacOS, Windows Explorer on Windows), and look at the files.

To list files in a terminal, you use the ls command to list all files in the current directory. The pwd commands tells you what directory you're currently in.

Burnout is something you don't expect to happen to you—until it does. The technology industry is one of the worst offenders; over 60% of industry professionals report they've experienced burnout. Sixty percent! Chances are, you or someone you know has dealt with it. How can we tackle such a staggering burnout rate if those who make decisions about mental health barely know what burnout is, never mind how to prevent it?

For today's sysadmin, many companies expect you to have cross-platform knowledge, network knowledge, and application knowledge. Add to that a dash of programming ability, a pinch of sysadmin experience, a heaping portion of social skills, and a fanatical commitment to reliability and automation.

What do we call this new, post-modern sysadmin? Do we use the same term and simply stretch the responsibilities? Or do we give this evolved role a new name?

Drive space isn't quite as precious as it was in the early days of computing, but no matter how much space you have, there's always the potential to run out. Computers need a little space just to operate, so it's important to check occasionally to ensure you haven't inadvertently used up literally all the space available on your drive. In the Linux terminal, you can do that with the df command.

The df command displays the amount of disk space available on the file system.

WildFly, formerly known as JBoss Application Server, is an open source Java EE application server. Its primary goal is to provide a set of vital tools for enterprise Java applications.

According to the Jakarta EE 2020/2021 survey, WildFly is head and shoulders above in the recent application servers and in the rating categories. Here are some of the reasons why: