How do I use unison to synchronize only dotfiles and dotfolders?

Question

I would like to synchronize only files and folders that start with a dot in my home folder.

More specifically, I only want to synchronize the files and folders listed by:

ls -ld ~/.[^.]*

Unison command line I tried:

unison /home/username /backup/dotfiles -ui text -perms 0 -ignorenot 'Regex .[!.]*' -ignore 'Regex *[!.]'

gives the error:

Malformed pattern "Regex *[!.]".

This is a simplified example, and it would be reasonable to do this with rsync instead, but I would like to use unison because in my real use case I need bidirectional sync.

Answer 1

The regex syntax you're looking for is

"^.[^.]*"