Put all backups into one backup folder

Question

How can I set up Emacs so that all backups are placed into one backup folder? e.g. /MyEmacsBackups

Be aware that this could have the unintended side effect of leaving sensitive information lingering around on your machine, even after the originals are moved/deleted. It would be advisable to purge this backup folder occasionally. These backup files may also have different permissions than the originals. — nispio, Sep 23 '14 at 22:00

shosti · Accepted Answer · 2014-09-23T22:46:13.600

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Check out backup-directory-alist, which allows you to set backup locations by file regexp. To have everything go to one directory, try something like:

(setq backup-directory-alist '(("." . "~/MyEmacsBackups")))

For the truly paranoid (like myself), there's also backup-each-save, which (as the name suggests) backs up your files each time they're saved in a convenient location. This gives an extra layer of protection over traditional version control, for instance for those cases when you accidentally clear your working directory without checking something in.

edited Sep 23 '14 at 22:46

answered Sep 23 '14 at 21:38

shosti

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I have done this but ls -a ~/MyEmacsBackups keep returning 0 file , what might be the reason ? – alper Oct 15 '20 at 22:30

score 21 · Answer 2 · edited Apr 27 '23 at 16:35

The following is a quick code from my .emacs. It does not only put backups into a specific directory, but also auto-saves, and does the same for Tramp files so those are not put onto the remote system.

;; Put backup files neatly away
(let ((backup-dir "~/tmp/emacs/backups")
      (auto-saves-dir "~/tmp/emacs/auto-saves/"))
  (dolist (dir (list backup-dir auto-saves-dir))
    (when (not (file-directory-p dir))
      (make-directory dir t)))
  (setq backup-directory-alist `(("." . ,backup-dir))
        auto-save-file-name-transforms `((".*" ,auto-saves-dir t))
        auto-save-list-file-prefix (concat auto-saves-dir ".saves-")
        tramp-backup-directory-alist `((".*" . ,backup-dir))
        tramp-auto-save-directory auto-saves-dir))
(setq backup-by-copying t    ; Don't delink hardlinks
      delete-old-versions t  ; Clean up the backups
      version-control t      ; Use version numbers on backups,
      kept-new-versions 5    ; keep some new versions
      kept-old-versions 2)   ; and some old ones, too

score 4 · Answer 3 · edited Sep 23 '14 at 22:14

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;; put all backup files into ~/MyEmacsBackups
(setq backup-directory-alist '(("." . "~/MyEmacsBackups")))
(setq backup-by-copying t)

edited Sep 23 '14 at 22:14

Gilles 'SO- stop being evil'

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answered Sep 23 '14 at 21:47

Terry Shi

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What benefit does your answer have over shosti's? – Gilles 'SO- stop being evil' Sep 23 '14 at 22:00
@Gilles Not much, https://www.gnu.org/software/emacs/manual/html_node/emacs/Backup-Copying.html – Terry Shi Sep 23 '14 at 22:08
Also, file mounts in docker doesn't work well with (not backup-by-copying). Actually I'm not really sure why one would want the default behavior. – x-yuri Jan 03 '22 at 18:55

Put all backups into one backup folder

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