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Diffstat (limited to 'doc/guix.texi')
| -rw-r--r-- | doc/guix.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index d5884008f4..93d1c2be3b 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -938,6 +938,12 @@ package to a machine connected over SSH, one would run: guix archive --export emacs | ssh the-machine guix archive --import @end example +@noindent +However, note that, in this example, all of @code{emacs} and its +dependencies are transferred, regardless of what is already available in +the target machine's store. The @code{--missing} option can help figure +out which items are missing from the target's store. + Archives are stored in the ``Nix archive'' or ``Nar'' format, which is comparable in spirit to `tar'. When exporting, the daemon digitally signs the contents of the archive, and that digital signature is @@ -959,6 +965,11 @@ therein into the store. Abort if the archive has an invalid digital signature, or if it is signed by a public key not among the authorized keys (see @code{--authorize} below.) +@item --missing +Read a list of store file names from the standard input, one per line, +and write on the standard output the subset of these files missing from +the store. + @item --generate-key[=@var{parameters}] @cindex signing, archives Generate a new key pair for the daemons. This is a prerequisite before |