rclone/docs/content/commands/rclone_sha1sum.md
Ivan Andreev b40d9bd4c4
cmd: add hashSUM file support (#5352)
Currently rclone check supports matching two file trees by sizes and hashes.
This change adds support for SUM files produced by GNU utilities like sha1sum.

Fixes #1005 

Note: checksum by default checks, hashsum by default prints sums.
New flag is named "--checkfile" but carries hash name.
Summary of introduced command forms:

```
rclone check sums.sha1 remote:path --checkfile sha1
rclone checksum sha1 sums.sha1 remote:path             
rclone hashsum sha1 remote:path --checkfile sums.sha1
rclone sha1sum remote:path --checkfile sums.sha1
rclone md5sum remote:path --checkfile sums.md5
```
2021-07-07 18:34:16 +03:00

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Markdown

---
title: "rclone sha1sum"
description: "Produces an sha1sum file for all the objects in the path."
slug: rclone_sha1sum
url: /commands/rclone_sha1sum/
# autogenerated - DO NOT EDIT, instead edit the source code in cmd/sha1sum/ and as part of making a release run "make commanddocs"
---
# rclone sha1sum
Produces an sha1sum file for all the objects in the path.
## Synopsis
Produces an sha1sum file for all the objects in the path. This
is in the same format as the standard sha1sum tool produces.
By default, the hash is requested from the remote. If SHA-1 is
not supported by the remote, no hash will be returned. With the
download flag, the file will be downloaded from the remote and
hashed locally enabling SHA-1 for any remote.
```
rclone sha1sum remote:path [flags]
```
## Options
```
--base64 Output base64 encoded hashsum
-C, --checkfile string Validate hashes against a given SUM file instead of printing them
--download Download the file and hash it locally; if this flag is not specified, the hash is requested from the remote
-h, --help help for sha1sum
--output-file string Output hashsums to a file rather than the terminal
```
See the [global flags page](/flags/) for global options not listed here.
## SEE ALSO
* [rclone](/commands/rclone/) - Show help for rclone commands, flags and backends.