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Diffstat (limited to 'doc/manual/command-ref/nix-hash.xml')
| -rw-r--r-- | doc/manual/command-ref/nix-hash.xml | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/doc/manual/command-ref/nix-hash.xml b/doc/manual/command-ref/nix-hash.xml index b4b509773d33..8d8213c0bca8 100644 --- a/doc/manual/command-ref/nix-hash.xml +++ b/doc/manual/command-ref/nix-hash.xml @@ -44,7 +44,9 @@ cryptographic hash of the contents of each <replaceable>path</replaceable> and prints it on standard output. By default, it computes an MD5 hash, but other hash algorithms are -available as well. The hash is printed in hexadecimal.</para> +available as well. The hash is printed in hexadecimal. To generate +the same hash as <command>nix-prefetch-url</command> you have to +specify multiple arguments, see below for an example.</para> <para>The hash is computed over a <emphasis>serialisation</emphasis> of each path: a dump of the file system tree rooted at the path. This @@ -122,6 +124,15 @@ cryptographic hash as <literal>nix-store --dump <refsection><title>Examples</title> +<para>Computing the same hash as <command>nix-prefetch-url</command>: +<screen> +$ nix-prefetch-url file://<(echo test) +1lkgqb6fclns49861dwk9rzb6xnfkxbpws74mxnx01z9qyv1pjpj +$ nix-hash --type sha256 --flat --base32 <(echo test) +1lkgqb6fclns49861dwk9rzb6xnfkxbpws74mxnx01z9qyv1pjpj +</screen> +</para> + <para>Computing hashes: <screen> |