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Table of Contents

• ↓ Arduino Variable Types: Quick Start for Beginners
• ↓ PowerShell Select-String in Context: Lines Before & After Match
• ↓ Base64 PowerShell Decode & Encode – One-Liners | CheatSheet
• ↓ Find File by Name in Linux – 7 Basic Examples
• ↓ Roborock Test Mode: How to Run a Full Self-Test Diagnostic
• ↓ Force `cp` Command to Overwrite Without Confirmation
• ↓ Top Alternatives to shellhacks.com

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"The concept of an Arduino variable is one of the first things beginners need to understand when programming microcontrollers. Variables store data that your Arduino sketch can use and modify. To declare a variable in Arduino, you must specify its type and name, like int ledPin = 13;. This tells the compiler what kind of data the variable will hold. Choosing the correct Arduino type of variable is important because it affects memory usage and how the data behaves. This guide explains what variables are, how to declare them, and which Arduino variable types are available. (more…)"

"The grep command in Linux is widely used to search for patterns in files and show surrounding lines using flags like -A, -B, or -C. But when switching to Windows PowerShell, many users struggle to find an equivalent. The PowerShell Select-String command is the answer. To show lines before and/or after a match, use the Select-String command with the -Context parameter. This lets you display a number of lines before, after, or both around the matching line. This guide explains how to use PowerShell Select-String to replicate grep’s context flags. (more…)"

"On Linux or macOS, encoding and decoding with base64 is simple. But on Windows, there’s no built-in base64 command in CMD or PowerShell. That’s why many users search for fast alternative of the base64 command in Windows. The simplest way to convert Base64 encoded/decoded data is to use PowerShell’s ToBase64String and FromBase64String methods. The one-liners below will let you work with strings and files securely – without sending your data to any third-party tools. This guide shows how to use Base64 PowerShell commands to make all Base64 data converts locally. (more…)"

"Finding files in Linux can be tricky, especially when you need to search through thousands of files across multiple directories. However, this is achievable, using the Linux find command. It lets you search for files in Linux recursively by full name, partial name, or pattern."

Key Topics & Focus Areas for shellhacks.com:

Arduino Variable Types: Quick Start for Beginners

PowerShell Select-String in Context: Lines Before & After Match

Base64 PowerShell Decode & Encode – One-Liners | CheatSheet

Find File by Name in Linux – 7 Basic Examples

Roborock Test Mode: How to Run a Full Self-Test Diagnostic

Force `cp` Command to Overwrite Without Confirmation