today's howtos
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How to Install and Secure OpenSSH Server on Pop!_OS - TecAdmin
OpenSSH is a popular open-source implementation of the Secure Shell (SSH) protocol, which is used to securely connect to and manage remote systems over a network. OpenSSH is included in many popular Linux distributions, including Pop!_OS, and it provides a wide range of tools and utilities for securely accessing and managing remote systems.
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How to Open Port in Linux - TecAdmin
In a Linux operating system, a port is a communication endpoint for either sending or receiving data over a network. Network ports are identified by a number, and each port number is associated with a specific type of network service. For example, port 80 is used for HTTP traffic, port 21 is used for FTP, and port 25 is used for email.
In order to establish a network connection, you need to open a port on your Linux system. There are several methods for doing this, including using the built-in firewall programs FirewallD, UFW, and iptables. Each of these methods has its own set of advantages and disadvantages, and in this article, we will discuss how to open a port in Linux using each of these methods.
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Linux DataOps: a career path with endless potential [Ed: Buzzwords instead of job titles]
Are you looking for a career that combines the power of Linux with the excitement of big data? If so, Linux DataOps may be the perfect fit for you! In this rapidly growing field, professionals work to optimize and manage the data pipelines and workflows that drive businesses and organizations in the digital age. But what exactly is Linux DataOps, and why should Linux careers consider going into this field? In this article, we'll take a closer look at the opportunities and challenges of Linux DataOps careers, and provide tips and resources for those interested in pursuing this exciting and in-demand career path.
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OpenSnitch: a simple application firewall for GNU/Linux
OpenSnitch is an application firewall with a simple graphical interface that allows to easily accept or deny network connections from any program.
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Automatic container updates with watchtower - Major Hayden
Keeping things updated quickly becomes a monotonous task. I’m surrounded by devices that demand updates on different frequencies. Phones, computers, tables, cloud instances, containers, and even my car need constant attention for updates that improve security or fix bugs. (Sometimes the updates cause bugs, but let’s forget about those for now)
My container infrastructure runs on Fedora CoreOS and it updates itself. It has an immutable layer underneath my containers that updates using ostree.
However, keeping containers updated is a constant battle. Updating the containers themselves is fairly easy with a podman pull or docker pull followed by a stop and start. It’s a bit easier with docker-compose, but it’s still a nuisance to remember to update.
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Sudo Configuration on Ubuntu and Linux Mint - OSNote
System administrators can allow users to execute commands without passwords using Sudo rights, also known as superuser do. This command temporarily elevates privileges, allowing users to do crucial tasks without logging in as the root user. As a result, you must authenticate yourself by entering your login credentials into the system, confirming that you have the appropriate rights to perform tasks.
However, providing this information again overtakes time, but there is a way that you can use it to disable the authentication. As a result, this article will show you how to create a password-less sudo on Ubuntu and Linux Mint. So is Linux mint good for beginners? I would say Linux Mint is one of the best Linux distro for Beginners. Linux mint requires the same hardware as Ubuntu, and Installing Linux Mint is easy, have a look here to download it.
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What is a Binary File? - TecAdmin
A binary file is a type of computer file that is stored in a binary format, which means that it is composed of a series of 0s and 1s that represent the data stored in the file. Binary files are often used to store data in a form that is more efficient or more compact than a text file.
Binary files are used for a wide range of purposes, including storing executable programs, images, audio and video files, and data files. The most common type of binary file is an executable file, which is a program that can be run on a computer. Other common types of binary files include image files (such as JPEG, PNG, and GIF), audio and video files (such as MP3, AVI, and MOV), and data files (such as database files and spreadsheet files).