Shell & Coin Blog
Every Linux guide, crypto explainer and review we have published, newest first.
Page 9 of 21
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How to Use diff Command in Linux: Compare Files and Configs
Learn how to use the Linux diff command to compare files and configs. Covers output reading, key flags, directory comparison, and the diff+patch workflow.
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What Is a DEX in Crypto: How Decentralized Exchanges Actually Work
Discover what a DEX is in crypto, how decentralized exchanges work via AMMs and liquidity pools, and how to make your first DEX trade safely in 2025.
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How to Use grep Command in Linux: The Text Search Tool Every Admin Needs
Master the grep command in Linux with practical examples. Learn essential flags, regex patterns, recursive search, and real-world sysadmin use cases.
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Golden Cross vs Death Cross Crypto: The Signal That Actually Works
Learn how the golden cross and death cross crypto signals work, when to use them, and how to avoid the 35% false signal rate. Real Bitcoin examples included.
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How to Use Netcat (nc) Command in Linux: The Network Swiss Army Knife Every Admin Needs
Master the netcat (nc) command in Linux with real examples. Learn port scanning, file transfers, connection testing, and banner grabbing every sysadmin needs.
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What Is the Wyckoff Method in Trading (The Smart Money Playbook)
Learn what the Wyckoff Method is, how the four market phases work, and how to use accumulation and distribution to trade like smart money in crypto.
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How to Add Swap Space in Linux: The Complete Guide Every Admin Needs
Learn how to add swap space in Linux using a swap file or swap partition. Step-by-step commands, size recommendations, and swappiness tuning included.
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What is DeFi (Decentralized Finance): The Financial Revolution Happening Without Banks
Discover what DeFi (decentralized finance) is, how it works, and why it is reshaping finance. Learn the benefits, risks, and how to get started safely in 2025.
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What is Crypto Backwardation (And How It Signals Market Fear)
Crypto backwardation occurs when futures trade below spot price, signaling extreme fear. Learn what it means, how to spot it, and what to do when it appears.
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How to Compile Software from Source in Linux: The Complete Guide
Learn how to compile software from source in Linux with this step-by-step guide covering configure, make, make install, dependencies, and troubleshooting common errors.
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What is Crypto Slashing (And Why I Chose Liquid Staking Over Solo Validators)
Crypto slashing is the penalty validators face for breaking PoS rules. Learn how it works, real statistics, and why 0.04% of Ethereum validators have been slashed since 2020.
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What is Crypto Position Trading (And Why It Finally Made Me Patient)
Position trading in crypto means holding for weeks or months to capture major trends. Learn how this patient strategy differs from day trading and swing trading.
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How to Redirect Output in Linux: Master Pipes, File Descriptors, and Stream Control
Master Linux output redirection with stdin, stdout, and stderr. Learn pipes, file descriptors, 2>&1, and /dev/null through practical examples every admin needs.
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How to Use Ichimoku Cloud in Crypto Trading (The Indicator I Ignored Until It Saved My Portfolio)
Learn how to use Ichimoku Cloud for crypto trading. Master Tenkan-sen, Kijun-sen, and cloud signals with TradingView setup, strategies, and common mistakes to avoid.
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How to Use logrotate in Linux: Prevent Disk-Full Disasters with Automated Log Management
Learn how to use logrotate in Linux to automate log rotation, prevent disk space disasters, and keep your servers running smoothly. Step-by-step guide with examples.
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What is Order Flow in Trading (And Why Reading the Tape Changed Everything for Me)
Order flow reveals the real-time battle between buyers and sellers that price charts can't show. Learn how reading the tape helps traders spot institutional activity and make smarter…
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What is Passive Income (And Why 88% of People Chasing It Never Make a Dollar)
Passive income sounds amazing until you try building it. Here is what passive income really is, why 90% fail, and the 3 streams that actually work in 2026.
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What Are Inodes in Linux: The Filesystem Concept Every Admin Needs to Understand
Learn what inodes are in Linux, why they matter, and how to fix the confusing no space left on device error when df shows plenty of free disk…
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What is FDV in Crypto (And Why I Passed on a “10x Gem” That Crashed 80%)
Learn what FDV (fully diluted valuation) means in crypto, how to calculate it, and why high FDV tokens crash. Real examples from someone who learned the hard way.
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How to Use SCP Command in Linux: The Secure File Transfer Tool Every Admin Needs
Learn how to use the SCP command in Linux to securely transfer files between systems. Includes syntax, real-world examples, troubleshooting tips, and security best practices.
