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114 lines
3.3 KiB
Markdown
114 lines
3.3 KiB
Markdown
---
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title: "Union"
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description: "Remote Unification"
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date: "2018-08-29"
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---
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<i class="fa fa-link"></i> Union
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-----------------------------------------
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The `union` remote provides a unification similar to UnionFS using other remotes.
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Paths may be as deep as required or a local path,
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eg `remote:directory/subdirectory` or `/directory/subdirectory`.
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During the initial setup with `rclone config` you will specify the target
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remotes as a space separated list. The target remotes can either be a local paths or other remotes.
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The order of the remotes is important as it defines which remotes take precedence over others if there are files with the same name in the same logical path.
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The last remote is the topmost remote and replaces files with the same name from previous remotes.
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Only the last remote is used to write to and delete from, all other remotes are read-only.
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Subfolders can be used in target remote. Assume a union remote named `backup`
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with the remotes `mydrive:private/backup mydrive2:/backup`. Invoking `rclone mkdir backup:desktop`
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is exactly the same as invoking `rclone mkdir mydrive2:/backup/desktop`.
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There will be no special handling of paths containing `..` segments.
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Invoking `rclone mkdir backup:../desktop` is exactly the same as invoking
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`rclone mkdir mydrive2:/backup/../desktop`.
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Here is an example of how to make a union called `remote` for local folders.
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First run:
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rclone config
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This will guide you through an interactive setup process:
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```
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No remotes found - make a new one
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n) New remote
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s) Set configuration password
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q) Quit config
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n/s/q> n
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name> remote
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Type of storage to configure.
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Choose a number from below, or type in your own value
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[snip]
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XX / Union merges the contents of several remotes
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\ "union"
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[snip]
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Storage> union
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List of space separated remotes.
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Can be 'remotea:test/dir remoteb:', '"remotea:test/space dir" remoteb:', etc.
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The last remote is used to write to.
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Enter a string value. Press Enter for the default ("").
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remotes>
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Remote config
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--------------------
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[remote]
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type = union
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remotes = C:\dir1 C:\dir2 C:\dir3
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--------------------
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y) Yes this is OK
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e) Edit this remote
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d) Delete this remote
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y/e/d> y
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Current remotes:
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Name Type
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==== ====
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remote union
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e) Edit existing remote
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n) New remote
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d) Delete remote
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r) Rename remote
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c) Copy remote
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s) Set configuration password
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q) Quit config
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e/n/d/r/c/s/q> q
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```
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Once configured you can then use `rclone` like this,
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List directories in top level in `C:\dir1`, `C:\dir2` and `C:\dir3`
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rclone lsd remote:
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List all the files in `C:\dir1`, `C:\dir2` and `C:\dir3`
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rclone ls remote:
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Copy another local directory to the union directory called source, which will be placed into `C:\dir3`
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rclone copy C:\source remote:source
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<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/union/union.go then run make backenddocs -->
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### Standard Options
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Here are the standard options specific to union (Union merges the contents of several remotes).
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#### --union-remotes
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List of space separated remotes.
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Can be 'remotea:test/dir remoteb:', '"remotea:test/space dir" remoteb:', etc.
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The last remote is used to write to.
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- Config: remotes
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- Env Var: RCLONE_UNION_REMOTES
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- Type: string
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- Default: ""
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<!--- autogenerated options stop -->
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