Shell & Coin Blog
Every Linux guide, crypto explainer and review we have published, newest first.
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What Is an HSA Account: The Triple Tax Advantage Most People Are Ignoring
What is an HSA account? Learn the triple tax advantage, 2026 contribution limits, and how to use your HSA as a stealth retirement account that beats a 401k.
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What Is an Expense Ratio (And Why It Could Be Costing You Thousands)
Learn what an expense ratio is, how it silently erodes your investment returns, and what makes a good one in 2026. Real data from ICI and Morningstar.
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sar Command in Linux: Monitor Historical System Performance Like a Pro
Monitor CPU, memory, disk I/O, and network—historically. Learn how to install sysstat and use the sar command in Linux to analyze past performance.
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What Is Lido Finance: How stETH Makes Ethereum Staking Liquid
What is Lido Finance? Learn how stETH lets you earn ETH staking rewards without locking 32 ETH. Complete guide covering how it works, risks, fees, and DeFi use…
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Best Linux IDE in 2026: I Tested 6 (One Became My Daily Driver)
Testing the best Linux IDEs of 2026: VS Code, Neovim, JetBrains, Zed, Eclipse, and Geany ranked by real performance, setup ease, and workflow fit.
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What Is Shiba Inu (SHIB): The Meme Coin That Built an Ecosystem
What is Shiba Inu (SHIB)? Learn how this Ethereum meme coin evolved into a DeFi ecosystem with Shibarium L2, ShibaSwap DEX, and a deflationary burn model.
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Best Linux Package Manager in 2026: apt, dnf, pacman, Nix Compared
Compare the best Linux package managers in 2026: apt, dnf, pacman, zypper, and Nix. I tested them all — here's which one belongs on your system.
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What Are Zero Knowledge Proofs in Crypto: The Privacy Tech Powering the Next L2 Wave
Zero knowledge proofs let you verify truth without revealing data. Here's how ZK tech powers Ethereum L2 scaling, DeFi privacy, and the future of crypto in 2026.
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What Is a Crypto Bridge: How Cross-Chain Transfers Work (And Where $2.8B Went)
A crypto bridge connects isolated blockchains so you can move assets between them. Here's how they work, why $2.8B has been stolen, and how to stay safe.
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How to Use nice and renice in Linux: Control Process Priority Like a Pro
Learn how to use Linux nice and renice commands to control process CPU priority. Practical examples for sysadmins managing servers, backups, and builds.
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Best Linux Container Management Tools in 2026: 6 I Tested on My Homelab
Discover the best Linux container management tools in 2026. I personally tested Portainer, Dockge, Lazydocker, ctop, Komodo, and Dozzle on my homelab.
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USDC vs USDT: Which Stablecoin Should You Actually Trust With Your Money?
USDC vs USDT: Which stablecoin is actually safer? Compare reserves, GENIUS Act compliance, depegging history, and DeFi use cases before you decide.
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How to Install MySQL on Linux: Step-by-Step Setup and Security Guide
Learn how to install MySQL on Linux with this step-by-step guide. Covers Ubuntu and RHEL setup, mysql_secure_installation, users, and firewall rules.
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How to Set Up MetaMask: The Step-by-Step Crypto Wallet Guide
Set up MetaMask wallet in minutes. Learn how to install it, secure your seed phrase, add custom networks, and avoid the scams that steal from 500 users daily.
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lsblk Command in Linux: List Block Devices and Storage Layout
Learn how to use the lsblk command in Linux with real examples. View block devices, UUIDs, and storage layout with essential options covered.
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What Is Hedera (HBAR) Crypto: The Enterprise Blockchain That Isn’t Actually a Blockchain
What is Hedera HBAR crypto? Learn how hashgraph consensus, the Governing Council, and enterprise use cases make HBAR different from every other blockchain.
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vmstat Command in Linux: Monitor CPU, Memory, and Swap in Real Time
Learn how to use the vmstat command in Linux to monitor CPU, memory, swap, and I/O in real time. Includes output explanation and troubleshooting examples.
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What Is a CBDC: How Central Bank Digital Currencies Work (And Why You Should Be Paying Attention)
A CBDC is digital cash issued directly by your government. Learn how they work, which countries launched them, and why the US halted its digital dollar.
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What Is a Mutual Fund: How Managed Money Works and What It Costs
A mutual fund pools money from investors to buy stocks and bonds. Learn how they work, types available, and whether the fees are actually worth it.
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Best Linux Distro for Beginners in 2026: Start Here, Thank Me Later
New to Linux? I've tested all the popular options so you don't have to. Here are the best beginner Linux distros for 2026, ranked honestly — no fluff.
