How to get information about current buffer/file in emacs?

Question

When working on a buffer (that maps to a certain file) , how to get info about it? Like Path on disk, size, ...

Answer 1

M-x dired RET

Answer 2

Additionally, there's dired-x which has dired-jump - this allows you to go straight to the file you're visiting. dired-x.el appears to be shipped with my emacs-22.1, so it should suffice to say

(require 'dired-x)

in your ~/.emacs. That installs the binding C-x C-j for dired-jump.

Answer 3

If you just want the path and don't want to open dired mode, following will display the full path in the mini buffer and copy it to clipboard. I find it very useful. Put this in your .emacs

(global-set-key (kbd "<f8>") 'copy-buffer-file-name)