39 lines
1.7 KiB
ReStructuredText
39 lines
1.7 KiB
ReStructuredText
Edit file as another user in Emacs
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##################################
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:date: 2016-11-10T08:57:12Z
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:category: blog
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:tags: development,emacs
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:url: 2016/11/10/edit-file-as-other-user-in-emacs/
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:save_as: 2016/11/10/edit-file-as-other-user-in-emacs/index.html
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:status: published
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:author: Gergely Polonkai
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I have recently found `this article <http://emacsredux.com/blog/2013/04/21/edit-files-as-root/>`_
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by Bozhidar Batsov on opening the current file as root. I barely use `tramp
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<https://www.gnu.org/software/tramp/>`_ for sudo access, but when I do, I almost never use root as
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the target user. So I decided to fix it for my needs.
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.. code-block:: lisp
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(defun open-this-file-as-other-user (user)
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"Edit current file as USER, using `tramp' and `sudo'. If the current
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buffer is not visiting a file, prompt for a file name."
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(interactive "sEdit as user (default: root): ")
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(when (string= "" user)
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(setq user "root"))
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(let* ((filename (or buffer-file-name
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(read-file-name (format "Find file (as %s): "
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user))))
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(tramp-path (concat (format "/sudo:%s@localhost:" user) filename)))
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(if buffer-file-name
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(find-alternate-file tramp-path)
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(find-file tramp-path))))
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If the user is not specified, the default is still root. Also, if the current buffer is not
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visiting a file, I prompt for a filename. As I’m not an ``ido`` user, I didn’t bother calling
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``ido-read-file-name``; `helm <https://github.com/emacs-helm/helm/wiki>`_ overrides
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``read-file-name`` for me anyway.
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Unlike Bozhidar, I barely use this feature, so I didn’t bind this to a key.
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