👥 Users & Groups (Extended)

Managing users, groups and permissions in Linux.

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🔧 Creating Users

sudo adduser robert
sudo usermod -aG sudo robert

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🧩 Viewing User Info

id robert
groups robert

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🔧 Managing Groups

sudo groupadd developers
sudo usermod -aG developers robert

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🧱 Sudo Permissions

Edit:

/etc/sudoers

Use:

sudo <command>

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🚨 Security Tips

• Avoid giving sudo to unnecessary users
• Use groups for permission management
• Keep /etc/passwd and /etc/shadow secure