Linux Commands #28 - sudo — The MOST IMPORTANT Linux Command (Admin Powers Explained)
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sudo = SuperUser DO. The bridge between regular user and full system administrator. Type it before any command to run that ONE command with root privileges. The most powerful keyword in Linux — and the most dangerous if misused.
⚠️ This lesson includes "sudo + rm -rf" — the catastrophe waiting one typo. Learn the safe habits.
In this lesson:
🎯 sudo COMMAND — one-shot elevation
🎯 sudo -u USER COMMAND — run as someone else
🎯 sudo -i — become root in a shell
🎯 The three guardrails: sudoers, password, logged
🎯 When sudo is needed vs not (decision matrix)
🎯 The Steam 2016 disaster — and how to never repeat it
Full Linux Commands course at dargslan.com — security taught alongside every command.
⏱ TIMESTAMPS
0:00 Tom can't install nginx — why?
1:30 What sudo actually does
2:00 First try: sudo apt update
2:30 The three patterns: one-shot / -u / -i
3:00 Decision matrix: sudo or no sudo?
3:30 Real example: full nginx install workflow
4:00 The sudo + rm -rf horror stories
4:30 Safe sudo habits
📚 Linux Commands — The First 50 · Lesson 28 · dargslan.com
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