SKILL JOURNEY
NixOS
Declarative, reproducible Linux
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Lessons
0/1000
XP
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Complete
Up next · Lesson 1
What is NixOS
1YOU ARE HERE
Lesson 1+90 XP
What is NixOS
NixOS describes your whole system — packages, services, users — in one config file. Rollbacks are atomic.
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2
Lesson 2+110 XP
Install with nix-env
Install a package into your user profile.
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3
Lesson 3+120 XP
Rebuild the system
Apply changes from configuration.nix.
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4
Lesson 4+110 XP
Ephemeral shell
Drop into a shell with a package available, without installing it.
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5
Lesson 5+100 XP
Update channels
Refresh the nix channel index.
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Clear all 5 lessons to unlock the chest
6
Lesson 6+130 XP
Rollback generation
Boot the previous system generation.
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7
Lesson 7+110 XP
Garbage collect
Free disk space from old generations.
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8
Lesson 8+130 XP
Flake build
Build a flake output.
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9
Lesson 9+100 XP
Home Manager
Manage user-level config declaratively.
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Clear all 4 lessons to unlock the chest
NixOS Master