Emacs: Backup Current File
Here's a command to backup the current file.
(defun xah-make-backup () "Make a backup copy of current file or dired marked files. If in dired, backup current file or marked files. The backup file name is in this format x.html~2018-05-15_133429~ The last part is hour, minutes, seconds. in the same dir. If such a file already exist, it's overwritten. If the current buffer is not associated with a file, nothing's done. URL `http://ergoemacs.org/emacs/elisp_make-backup.html' Version 2018-05-15" (interactive) (let (($fname (buffer-file-name)) ($date-time-format "%Y-%m-%d_%H%M%S")) (if $fname (let (($backup-name (concat $fname "~" (format-time-string $date-time-format) "~"))) (copy-file $fname $backup-name t) (message (concat "Backup saved at: " $backup-name))) (if (string-equal major-mode "dired-mode") (progn (mapc (lambda ($x) (let (($backup-name (concat $x "~" (format-time-string $date-time-format) "~"))) (copy-file $x $backup-name t))) (dired-get-marked-files)) (message "marked files backed up")) (user-error "buffer not file nor dired")))))
(defun xah-make-backup-and-save () "Backup of current file and save, or backup dired marked files. For detail, see `xah-make-backup'. If the current buffer is not associated with a file nor dired, nothing's done. URL `http://ergoemacs.org/emacs/elisp_make-backup.html' Version 2015-10-14" (interactive) (if (buffer-file-name) (progn (xah-make-backup) (when (buffer-modified-p) (save-buffer))) (progn (xah-make-backup))))
You can give one of the command a key, such as 【F8】. [see Emacs: How to Define Keys]
To delete all backups of current directory, in
dired, press【~ x】(that's
[see Emacs: File Manager, dired]
To jump from current file to its dired location, Alt+x
Current File Commands
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