Open a file with su/sudo inside Emacs
emacs, file-permissions, sudo
Solution
The nice thing about Tramp is that you only pay for that round-trip to SSH when you open the first file. Sudo then caches your credentials, and Emacs saves a handle, so that subsequent sudo-opened files take much less time.
I haven't found the extra time it takes to save burdening, either. It's fast enough, IMO.
Problem
Suppose I want to open a file in an existing Emacs session using `su` or `sudo`, without dropping down to a shell and doing `sudoedit` or `sudo emacs`. One way to do this is ``` C-x C-f /sudo::/path/to/file ``` but this requires an expensive round-trip through SSH. Is there a more direct way? [EDIT] @JBB is right. I want to be able to invoke `su`/`sudo` to save as well as open. It would be OK (but not ideal) to re-authorize when saving. What I'm looking for is variations of `find-file` and `save-buffer` that can be "piped" through `su`/`sudo`.