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tldr/pages/linux/nixos-rebuild.md

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nixos-rebuild

Reconfigure a NixOS machine. More information: https://nixos.org/nixos/manual/#sec-changing-config.

  • Build and switch to the new configuration, making it the boot default:

sudo nixos-rebuild switch

  • Build and switch to the new configuration, making it the boot default and naming the boot entry:

sudo nixos-rebuild switch -p {{name}}

  • Build and switch to the new configuration, making it the boot default and installing updates:

sudo nixos-rebuild switch --upgrade

  • Rollback changes to the configuration, switching to the previous generation:

sudo nixos-rebuild switch --rollback

  • Build the new configuration and make it the boot default without switching to it:

sudo nixos-rebuild boot

  • Build and activate the new configuration, but don't make a boot entry (for testing purposes):

sudo nixos-rebuild test

  • Build the configuration and open it in a virtual machine:

sudo nixos-rebuild build-vm