What Are Crypto Perpetual Futures (And How I Made $8,400 Trading Them)
Alexa Velin
January 18, 2026
Root access to modern finance.
Root access to modern finance.
Welcome to our daily blog, your daily dose of inspiration, information about cryptocurrency and financing and everything in-between. Shell & Coin is proudly sponsored by Royal Pheromones.
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.
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.
USDC vs USDT: Which stablecoin is actually safer? Compare reserves, GENIUS Act compliance, depegging history, and DeFi use cases before you decide.
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.
What is Hedera HBAR crypto? Learn how hashgraph consensus, the Governing Council, and enterprise use cases make HBAR different from every other blockchain.
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.
Learn how to use Ansible on Linux to automate server setup with playbooks, inventories, and modules. Step-by-step guide with real examples for sysadmins.
Learn how to install Apache on Linux step by step. Covers Ubuntu, Debian, and RHEL/Rocky Linux with virtual hosts, firewall config, and security hardening.
Learn how to create and manage Linux bash aliases to speed up your terminal. Practical examples for navigation, safety, system admin, and networking shortcuts.
Master the Linux date command: formatting output, date arithmetic, Unix timestamps, timezones, and real bash scripting examples for sysadmins.
Set up Prometheus, Node Exporter, and Grafana on Linux step by step. Get a live CPU, RAM, and disk monitoring dashboard in under 30 minutes.
Learn how to use Podman in Linux: install it, run rootless containers, manage images, and integrate with systemd. The Docker alternative that is free forever.
Master the Linux xargs command with practical examples. Learn to build efficient pipelines, process files in parallel, and automate batch operations like a pro.
Master the Linux grep command with practical examples and real-world use cases. Learn essential options, regex patterns, and advanced techniques for searching text like a pro.
Master the Linux cut command to extract fields, columns, and characters from files. Learn syntax, practical examples, common mistakes, and when to use cut vs awk.
Learn how to check hostname in Linux using hostname, hostnamectl, and configuration files. Master FQDN lookups and hostname management for better server administration.
Master the netcat (nc) command in Linux with real examples. Learn port scanning, file transfers, connection testing, and banner grabbing every sysadmin needs.
Learn how to check load average in Linux with uptime, top, and htop. Understand what the numbers mean, when to worry, and how to troubleshoot high load issues.
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.
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.
Learn how to generate SSH key in Linux with this complete guide. Set up Ed25519 keys, understand key-based authentication, and secure your servers against brute force attacks.
Learn what the FIRE movement is and how Financial Independence Retire Early works. Calculate your FIRE number, understand different FIRE types, and discover if retiring decades early is right for you.
Tested 6 Linux backup tools in 2026 — Restic, Borg, Kopia, Timeshift and more. Find the best Linux backup software for your homelab or server.
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.
Listen, I’m about to teach you the most boring, predictable, grandmother-approved options strategy that’s made me $4,000-$6,000 every single month for the past two years. It’s called an Iron Condor, and despite the badass name that sounds like a metal band or a Marvel villain, it’s about as exciting as
Forex was supposed to be my path to easy money. Trade 24 hours a day! 100:1 leverage! No PDT rules! What could go wrong? Everything, as it turns out. I lost $40,000 in my first year trading forex because I jumped into exotic pairs with maximum leverage, no understanding of
Alright, before I give you this week’s penny stock watchlist, we need to have a real conversation. I know why you’re here – you’ve seen some 19-year-old on TikTok turn $500 into $50,000 trading penny stocks and now you want your piece. I get it. I was you once, except
Learn how to use the ln command in Linux to create symbolic and hard links. Master link types, avoid common mistakes, and manage file system links like a pro.
Learn how to use the watch command in Linux to monitor commands in real time. Real-world examples, essential options, and practical tips from 10+ years of sysadmin work.
Help! My Linux Disk is Full! A Step-by-Step Guide to Finding and Freeing Up Space It’s a feeling many Linux users, sysadmins, and developers know all too well: you’re working along, deploying a new application, compiling code, or just letting your server run, when suddenly… alerts start firing. Performance degrades.
Master the ls command in Linux with this complete guide. Learn essential options, advanced techniques, common mistakes, and real-world examples from 15 years of system administration.
Learn how to use the chown command in Linux to change file ownership. Includes real-world examples, security tips, and troubleshooting for system administrators.
Master Linux output redirection with stdin, stdout, and stderr. Learn pipes, file descriptors, 2>&1, and /dev/null through practical examples every admin needs.
Master Linux network interfaces with ip, nmcli, and ethtool commands. Learn to troubleshoot connectivity issues and understand network interface names.
Learn how to install and configure Nginx web server on Linux. Step-by-step guide covering installation, server blocks, SSL setup, and security hardening.
Learn how to use Vim in Linux with this beginner-friendly guide. Master essential commands, modes, and navigation to edit files like a pro.
What is Sei Network (SEI) crypto? Learn how this L1 blockchain delivers 12,500 TPS, sub-400ms finality, and DeFi-native speed using Twin-Turbo consensus.
Stellar (XLM) is the payments blockchain powering cross-border remittances, USDC, and the DTCC’s 2027 tokenized securities platform. Here’s how it works.
A spot Bitcoin ETF holds real BTC and trades on stock exchanges. Here’s how it works, what it costs, the top funds to know, and who should actually buy one.
Jupiter (JUP) is Solana’s dominant DEX aggregator with $1T+ in volume and 95% market share. Here’s how it works, what JUP does, and if it’s worth your attention.
Injective (INJ) is a Layer 1 blockchain built from scratch for DeFi finance. Learn how its MEV-resistant order book, burn tokenomics, and RWA markets work.
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.
Hot wallet vs cold wallet explained: the key differences, real security risks, and which crypto storage strategy makes sense for your holdings.
Aptos is a Layer-1 blockchain built by ex-Meta engineers using the Move language. Learn how APT, Block-STM, and real-world asset adoption make it unique.
ZKsync is Ethereum’s leading ZK rollup: lower fees, instant finality, and native account abstraction. Here’s exactly how it works and whether you should use it.
The biggest onchain exchange
Centralized-exchange speed, but your funds stay in your own wallet. No account, no KYC.
Try Hyperliquid