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# Name
`nix-store --serve` - serve local Nix store over SSH
# Synopsis
`nix-store` `--serve` [`--write`]
# Description
The operation `--serve` provides access to the Nix store over stdin and
stdout, and is intended to be used as a means of providing Nix store
access to a restricted ssh user.
The following flags are available:
- `--write`
Allow the connected client to request the realization of
derivations. In effect, this can be used to make the host act as a
remote builder.
{{#include ./opt-common.md}}
{{#include ../opt-common.md}}
{{#include ../env-common.md}}
# Examples
To turn a host into a build server, the `authorized_keys` file can be
used to provide build access to a given SSH public key:
```console
$ cat <<EOF >>/root/.ssh/authorized_keys
command="nice -n20 nix-store --serve --write" ssh-rsa AAAAB3NzaC1yc2EAAAA...
EOF
```
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