How to make Org-Babel support tangel to su/sudo file with tramp-sudo?

Question

I hope to let org-babel can tangle to root permission file with tramp-sudo support like the following format:

#+BEGIN_SRC clojure :dir /sudo:: :tangle "/etc/kk.clj"
...
#+END_SRC

But it does not work. How to implement this?

Here is the error:

Debugger entered--Lisp error: (file-error "Removing old name" "Permission denied" "/etc/nginx/conf.d/kk.clj")
  #<subr delete-file>("/etc/nginx/conf.d/kk.clj" nil)
  ad-Advice-delete-file(#<subr delete-file> "/etc/nginx/conf.d/kk.clj")
  apply(ad-Advice-delete-file #<subr delete-file> "/etc/nginx/conf.d/kk.clj")
  delete-file("/etc/nginx/conf.d/kk.clj")
  ...  [assoc 4] 6 "\n\n(fn SPEC NAME)"] :tangle :shebang 0 :tangle-mode "yes" file-name-sans-extension "no" nil "." :mkdirp file-name-directory make-directory parents file-exists-p mapcar car delete-file generate-new-buffer " *temp*" make-byte-code "
  ...
  mapc(....
  org-babel-tangle((4))
  funcall-interactively(org-babel-tangle (4))
  call-interactively(org-babel-tangle nil nil)
  command-execute(org-babel-tangle)

Answer 1

You can prefix tangle file path with /sudo::.

#+NAME: privoxy config for convert socks5 to HTTP proxy
#+BEGIN_SRC conf :tangle "/sudo::/etc/privoxy/config"
listen-address localhost:8118
forward-socks5 /  127.0.0.1:1080  .
#+END_SRC

Answer 2

The problem is the file name, I believe. /etc/privoxy/config is an absolute file name, the :dir parameter does not count therefore.

If you use a relative file name, like :dir "/sudo::/etc/" :tangle "privoxy/config" it shall work. This is to be preferred, if you have several code blocks applicable to the same directory /sudo::/etc/ via a global header setting for :dir.