I am working on using gotify-cli-for-notifying-me-of-nextcloud-uploads and I'll start by running the gotify cli as my user so I'll need to be able to see the directory in the filesystem that Nextcloud stores the data in.
That folder on disk is owned by www-data
(see nextcloud-permissions-with-zfs-and-ansible-nas
Turns out it's my computer and I can do what I want so I just add myself to the
www-data
group instead of running the gotify cli
as root
Bonus
You can remove users from groups with gpasswd -d username groupname