usage of `duplicacy init`

[Dieken]

https://github.com/deajan/backup-bench/blob/defca973d34d11764a2c790119e723d8f379198a/README.md?plain=1#L231

You can use duplicacy init -repository source-dir ..., the .duplicacy directory is created in current directory, so it won't clobber with source-dir.

I agree the CLI of duplicacy is weird 😄