Uncomplicated Firewall (UFW) is a built-in command-line tool for Ubuntu and Ubuntu-based distributions that allows users to easily and quickly create and manage firewalls. If you are planning to allow or restrict incoming/outgoing traffic for HTTP, HTTPS, SSH, FTP, and various other protocols, you can
Symfony Framework is a free and open-source PHP framework that includes a collection of reusable PHP components. It’s a vast library of PHP components that can help to speed up the development process, ease maintenance, eliminate repetitive coding, and ensure top-notch security. Despite being a
The Linux “sysctl” command is used to read and modify the kernel runtime variables that control the behavior of the running system and during the boot. This way, you can manage and adjust network, I/O operations, and memory management settings in real-time. If you’re a
The Linux free command displays the total amount of used and free memory, swap memory (if enabled), and the cache/buffer used by the kernel. This information can be used by a system administrator to investigate whether there is a sudden spike in server resource consumption.
Doas is a privilege escalation program similar to sudo. It was originally designed for OpenBSD, which allows users to run commands as if they were another user (e.g., root), and later, due to its simplicity and unique functionality, it was ported to many other Linux
To disable “avahi-daemon” without uninstalling, you need to first stop the “avahi-daemon” service and then disable it, which will prevent it from starting automatically at boot. 📝 If you come across the “Job for avahi-daemon.service canceled” or “triggering units are still active“, just ignore them
Many Linux commands like cp, mv, rm, and others that perform progressive tasks lack a built-in mechanism or option to display a progress bar. However, a verbose mode is present that can show the detailed insight of each action, but a progress indicator would have
The ‘ss’ command is a tool used to print network socket-related information such as PACKET sockets, TCP sockets, UDP sockets, DCCP sockets, RAW sockets, Unix domain sockets, etc. It is considered the best replacement for the old netstat command (now deprecated), offering new, powerful, and
There are several command-line tools available for Linux to quickly convert documents from one format to another using the appropriate flags. Yet, users often find it overwhelming, even for those who love command-line interfaces, to remember each flag. Hence, a simple GUI application could be
VirtualBox is a popular virtualization software and side hustle for Oracle, which likes to keep its fingers warm in various pies. It’s free, open-source, and cross-platform, allowing you to get the same experience on Linux, Windows, and macOS. Of course, you have more powerful and
A package manager is a command-line or graphical tool that allows you to easily search, install, update, and remove software packages on a Linux system. The software package is a collection of different files bundled together for simple distribution and installation. When installing any software
PyCharm is a well-known integrated development environment (IDE) for Python programming language that also offers support for Rust, Dart, HTML, JSON, Markdown, and several others. It’s available in two versions: Community and Professional. The Community edition is free and open-source but offers limited features for
