diff --git a/doc/manual/src/command-ref/nix-store/export.md b/doc/manual/src/command-ref/nix-store/export.md index 1bc46f53b..4f6dd5ffa 100644 --- a/doc/manual/src/command-ref/nix-store/export.md +++ b/doc/manual/src/command-ref/nix-store/export.md @@ -27,15 +27,21 @@ Nix store, the import will fail. # Examples -To copy a whole closure, do something -like: - -```console -$ nix-store --export $(nix-store --query --requisites paths) > out -``` - -To import the whole closure again, run: - -```console -$ nix-store --import < out -``` +> **Example** +> +> Deploy GNU Hello to an airgapped machine via USB stick. +> +> Write the closure to the block device on a machine with internet connection: +> +> ```shell-session +> [alice@itchy]$ storePath=$(nix-build '' -I nixpkgs=channel:nixpkgs-unstable -A hello --no-out-link) +> [alice@itchy]$ nix-store --export $(nix-store --query --requisites $storePath) | sudo dd of=/dev/usb +> ``` +> +> Read the closure from the block device on the machine without internet connection: +> +> ```shell-session +> [bob@scratchy]$ hello=$(sudo dd if=/dev/usb | nix-store --import | tail -1) +> [bob@scratchy]$ $hello/bin/hello +> Hello, world! +> ```