Shell & Coin Blog
Every Linux guide, crypto explainer and review we have published, newest first.
Page 8 of 21
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SSH Tunneling in Linux: Local, Remote, and Dynamic Port Forwarding
Learn SSH tunneling in Linux with real command examples. Master local, remote, and dynamic port forwarding to secure your connections like a pro.
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What Is Cardano (ADA): The Research-First Blockchain Explained
What is Cardano crypto (ADA)? Learn how its Ouroboros proof-of-stake works, real-world adoption, staking rewards, and why it's different from Ethereum.
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Best Terminal Emulator for Linux in 2025: I Tested 5 (One Changed My Workflow)
I tested the top Linux terminal emulators in 2025 — Kitty, Alacritty, WezTerm, Ghostty, and GNOME Terminal. Here is which one actually belongs in your workflow.
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What Is an Index Fund: How It Works and Why It Beats Most Pros
What is an index fund? Learn how these low-cost investments work, why 88% of active managers fail to beat them, and how to start investing today.
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What Is a 401(k) and How Does It Work: The Retirement Account Explained
Learn what a 401(k) is and how it works in 2026, including contribution limits, employer match, vesting, and tax advantages explained in plain English.
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How to Create a Systemd Service in Linux (Step-by-Step)
Learn how to create a custom systemd service in Linux with step-by-step examples. Write unit files, enable auto-start, and debug like a pro.
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What Is Dividend Investing: How It Works and Why It Builds Wealth
Dividend investing pays you to own stocks. Learn how dividends work, what yield and payout ratios mean, and how DRIP builds passive income over time.
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How to Use cat Command in Linux: Read, Combine, and Create Files
Learn the Linux cat command with real examples: view files, concatenate, create with heredoc, and avoid the useless use of cat anti-pattern.
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What Is a Covered Call Strategy (And How I Made $1,200 in a Flat Market)
Covered call strategy explained in plain English. Learn how to generate income from stocks you already own, with real examples and the mistakes to avoid.
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What Is XRP Crypto (And Why 300 Banks Are Quietly Using It)
What is XRP crypto? Learn how Ripple's XRP Ledger works, why 300+ banks use it, how the SEC lawsuit ended, and what it means for cross-border payments.
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How to Use firewalld in Linux: Manage Zones and Rules the Right Way
Learn how to use firewalld in Linux to manage zones, allow services, open ports, and write rich rules. The complete guide for RHEL, Rocky, and Fedora.
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What Is Solana Crypto: The High-Speed Blockchain Taking On Ethereum
What is Solana crypto? Discover how this Layer 1 blockchain uses Proof of History to hit 65,000 TPS, why SOL is top-5 crypto, and what the risks really…
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How to Add a User in Linux: The Command Every Admin Needs
Add a user in Linux the right way. This guide covers useradd, adduser, passwd, usermod, userdel, and granting sudo access with real examples.
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What is Ethereum: The Programmable Blockchain Behind Most of Crypto
What is Ethereum? Learn how ETH works, why it powers $119B in DeFi, and what makes it different from Bitcoin. A no-hype guide from a crypto trader.
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Proof of Work vs Proof of Stake: The Crypto Debate I Finally Settled
Proof of work vs proof of stake explained simply: key differences in energy, security, and decentralization—and which blockchains use each.
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Hetzner Review 2025: Is the Best-Value Linux VPS Worth the Hype?
Honest Hetzner review 2025: pricing, performance benchmarks, pros & cons, and who it's really for. A Linux sysadmin's take after years of real-world use.
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What Is a DAO in Crypto: How Decentralized Governance Actually Works
What is a DAO in crypto? Learn how decentralized autonomous organizations work, real examples, governance token risks, and whether joining one is worth it.
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How to Use sysctl in Linux: Tune Kernel Parameters Like a Pro
Learn how to use sysctl in Linux to read, modify, and persist kernel parameters. Covers vm.swappiness, network tuning, security hardening, and /etc/sysctl.conf.
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Fibonacci Retracement in Crypto Trading: Find Exact Reversal Zones
Learn how to use Fibonacci retracement in crypto trading to spot key reversal zones. Master the 61.8% golden ratio and find precise entry points.
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What Are Meme Coins in Crypto (And Why 97% of Them Fail Within a Year)
What are meme coins in crypto? Learn how they work, why they explode, and the brutal failure rate most investors never hear about before buying.
