CLI

C# for Windows and Cross-Platform Apps C# is a versatile language from Microsoft that runs on the .NET platform. It helps you build Windows desktop apps, servers, and tools that run on many systems. If you want one code base for several devices, C# is a solid choice. For Windows UI, developers often use WPF or WinForms. For cross‑platform UI, .NET MAUI can share most UI and logic across Windows, macOS, iOS, and Android. Linux support in MAUI is not official, so some teams turn to Avalonia or GTK for Linux desktops. ...

Version Control Systems: Git, Mercurial, and More Version control helps teams manage changes to code over time. It records who changed what and when, making it possible to review history, revert mistakes, and work on features in isolation. Today, many projects use distributed tools, so every developer keeps a full copy of the history, not just a central server. Git is the most widely used tool. It handles large projects, fast branching, and a rich ecosystem. Mercurial is another distributed system, praised for a clean, consistent interface. There are older options like Subversion or CVS, which are centralized. The right pick depends on team size, work style, and existing tools. ...

Navigating Operating Systems: From Kernels to User Interfaces An operating system (OS) is the software that helps your computer run. It sits between hardware and applications. It manages memory, devices, and how programs run. This makes everyday tasks feel smooth, whether you are writing a document, playing a game, or browsing the web. The kernel is the core part of an OS. It talks directly to the CPU, memory, and devices like disks and keyboards. User space is where apps live. Programs in this space can run, but they access hardware through the kernel. This separation protects the system and keeps programs from stepping on each other. ...