Shell & Coin Blog
Every Linux guide, crypto explainer and review we have published, newest first.
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How to Use tar Command in Linux: The Complete Archiving Guide
Master the Linux tar command with practical examples. Learn to create, extract, and compress archives using tar, gzip, and bzip2. Complete guide for beginners and sysadmins.
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Best Crypto Portfolio Trackers 2025: I Tested 7 Apps (Only 4 Are Worth Using)
After losing track of $18K in holdings across 6 wallets, I tested every major crypto portfolio tracker. Here are the 4 actually worth using in 2025.
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What is Slippage in Crypto (And Why It Cost Me $1,200 in One Trade)
I still remember the exact moment I learned what slippage in crypto really means. Not from a textbook. Not from a YouTube video. From watching $1,200 evaporate from…
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How to Install Software on Linux: The Complete Guide for Every Distribution
Learn how to install software on Linux using apt, dnf, pacman, and universal formats like Flatpak and Snap. Complete beginner-friendly guide with examples.
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How to Set Environment Variables in Linux: The Complete Guide
Learn how to set environment variables in Linux permanently and temporarily. Master export, PATH, .bashrc, and security best practices with real examples.
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What Are Crypto Perpetual Futures (And How I Made $8,400 Trading Them)
Crypto perpetual futures explained: the derivative contracts with no expiration date. Learn how funding rates work, liquidation risks, and strategies that actually make money.
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How to Use alias Command in Linux: Boost Productivity with Shell Shortcuts
Learn how to use the alias command in Linux to create custom shortcuts, automate repetitive tasks, and boost your command-line productivity with permanent aliases.
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What Are Crypto Airdrops (And Are They Worth the Risk in 2025)
Crypto airdrops distribute billions in free tokens yearly. Learn how they work, spot scams, understand tax implications, and decide if airdrop farming is worth your time in 2025.
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What is Crypto Mining: The Digital Gold Rush Explained (2025 Reality Check)
Crypto mining validates blockchain transactions and creates new coins through computational power. Learn how it works, profitability factors, and if it is worth it in 2025.
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What Are Bitcoin Ordinals and Are They Worth It? (The NFTs That Broke Bitcoin)
Bitcoin Ordinals let you inscribe NFTs directly on Bitcoin. But with $6.85 fees and accusations of spam attacks, are they worth it? Here is my honest take.
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Best Cold Storage Wallets in 2025: Secure Your Crypto the Right Way
Introduction If you’ve been in crypto long enough, you’ve seen the headlines. Exchange hacks. Frozen withdrawals. Billions vanishing overnight. Finding the best cold storage wallets in 2025 isn’t…
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Best Crypto Lending Platforms 2025: After $10B in Losses, Here’s What’s Actually Safe
Celsius and BlockFi collapsed, wiping out billions. I researched every crypto lending platform still standing in 2025—here's which ones are actually worth the risk.
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How to Take Profits in Crypto (The Exit Strategy I Wish I’d Had in 2021)
Learn proven crypto profit-taking strategies that protect gains during bull markets. Avoid the mistakes that cost investors billions in 2021 and 2022.
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What Are Wrapped Tokens: The Bridge Between Blockchains Explained
Wrapped tokens let Bitcoin work on Ethereum and other chains. Learn how wBTC, wETH work, their DeFi use cases, and the $2.8B security risk you need to know.
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How to Research Crypto Projects Before Investing (The Framework That Saved Me $40,000)
Learn how to research crypto projects with this proven due diligence framework. Avoid scams and find legitimate investments using on-chain metrics, team analysis, and red flag detection.
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How to Build a Crypto Portfolio Allocation Strategy (That Won’t Blow Up)
Learn how to build a balanced crypto portfolio allocation strategy. Expert-backed frameworks for Bitcoin, Ethereum, and altcoin allocation that minimize risk and maximize returns.
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What is Blockchain Technology: The Foundation Behind $393 Billion in Innovation
Discover what blockchain technology actually is, how it works behind the scenes, and why it's revolutionizing finance, supply chains, and digital identity in 2025.
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What is Layer 2 Crypto: The Scaling Solution That Saved Me $847 in Gas Fees
Layer 2 crypto networks process transactions off the main blockchain, slashing fees by 90-99%. Learn how Arbitrum, Optimism, and Polygon work—and why they matter in 2025.
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What Are Crypto Liquidity Pools: The DeFi Engine Powering $200 Billion in Trading
Liquidity pools power DeFi trading without order books. Learn how they work, how to earn fees as an LP, and the impermanent loss risks you need to know…
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What is Tokenomics: The Crypto Economics That Make or Break Your Investment
Tokenomics is the economics behind every crypto project. Learn how to evaluate token supply, distribution, and utility to avoid failed projects and spot winners.
