GitLab

consider the following command:

ln -sf /XXXX/shared/source-code-pro-fonts/649cbd9ddddf2f6f0ee6dda75160baa1 /YYYY/slappart6/srv/frontend-static/fonts/source-code-pro

When /YYYY/slappart6/srv/frontend-static/fonts/source-code-pro doesn't
exist, there is no problem, the link is created.
But when you run the command for the second time, since
/YYYY/slappart6/srv/frontend-static/fonts/source-code-pro is a
directory, ln will try to create the link
/YYYY/slappart6/srv/frontend-static/fonts/source-code-pro/649cbd9ddddf2f6f0ee6dda75160baa1
which is not possible because
/YYYY/slappart6/srv/frontend-static/fonts/source-code-pro is already a
link to a read only directory
(/XXXX/shared/source-code-pro-fonts/649cbd9ddddf2f6f0ee6dda75160baa1).

Quoting the "man ln":
       -n, --no-dereference
              treat  LINK_NAME  as a normal file if it is a symbolic link to a
              directory