How to recursively list all hidden files and directories?

If using GNU find, you can do

find /path -path '*/.*' -ls | tee output-file

Edit

To avoid to show non-hidden items contained in hidden directories

find /path -name '.*' >output-file

(as noted, tee could be avoided if you do not need to see the output, and -ls option should be used only if required).

To list the hidden files and directories in the current directory, including . and ..:

echo .*

To list the hidden files and directories in the current directory and its subdirectories recursively:

find . -name '.*'

If you want to save the results to a file, use a redirection:

find . -name '.*' >output-file.txt