UNIX / Linux Commands — Comprehensive Quick Reference
The first time I opened a terminal and typed ls, I felt completely lost. The second time I tried to delete a folder, I accidentally used rm -rf in the wrong directory. The third time I tried to search a file, I couldn't remember if it was grep or find or something else entirely.
Sound familiar?
The terminal is one of the most powerful tools in computing — and one of the most intimidating to learn, because every resource either over-simplifies it ("just type cd to change directory!") or throws you straight into man pages written for people who already know what they're doing.
This reference sheet sits in the middle: detailed enough to actually teach you, compact enough to keep open while you work.
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🔍 WHAT MAKES THIS DIFFERENT
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Most cheat sheets tell you what a command does. This one shows you:
• What the command looks like when you run it (real terminal output, not pseudocode)
• What each flag actually means — not just the abbreviation, but the full behaviour and when it matters
• The differences that trip people up: cd .. vs cd -, > vs >>, rm vs rm -r vs rm -rf, cp vs cp -r
• The patterns professionals use daily: piping, redirection, background jobs, process management
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📋 WHAT'S INCLUDED
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200+ commands across 10 sections — File System, Viewing & Editing, Searching, Redirection & Pipes, Permissions, Process Management, Networking, Compression, System Info, and Package Management — plus a full keyboard shortcuts and operators section.
Every command entry includes:
→ The exact command syntax
→ Available flags and variants
→ A description and a live terminal example with realistic output
Plus a dedicated Flag Reference table beneath — 95 rows of full-prose explanations for every flag in the document. Finally understanding why chmod 755 vs 644 vs 600 matters. Finally knowing the difference between kill and kill -9.
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👤 PERFECT FOR
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✅ Students working on remote university Linux servers
✅ ML/AI engineers SSHing into GPU machines to run training jobs
✅ Developers new to Linux or moving from a GUI-only workflow
✅ Anyone who keeps a browser tab open to Stack Overflow for basic commands
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Now available both in .docx and .pdf at https://tux1991.gumroad.com/l/LINUX!
Buy it once. Refer to it forever.
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