RSYNC : Menyinkronkan folder / file tertentu menggunakan rsync
, baik melalui jaringan rumah atau via ssh
ke server jauh.
rsync
adalah utilitas sinkronisasi satu arah yang dapat menghapus file pada target, jadi pastikan untuk mencadangkan data Anda pada sumber dan lokasi target, dan uji menyeluruh menggunakan --dry-run
opsi, sebelum melakukan hal yang nyata.
Untuk membaca tentang cara mengkonfigurasi .authinfo
file dengan benar , lihat https://www.gnu.org/software/emacs/manual/auth.html Contoh .authinfo
konten file (yang mungkin berisi beberapa entri berbeda) adalah sebagai berikut:
machine mymachine login myloginname password mypassword port myport
Konfigurasikan dan gunakan fungsi rsync-remote
untuk menyinkronkan ssh
ke server jauh. Atau, gunakan fungsi rsync-local
untuk menyinkronkan pada komputer yang sama atau melalui jaringan rumah tepercaya.
(require 'auth-source)
;;; EXAMPLE:
;;; (get-auth-info "12.34.567.89" "username")
;;; (get-auth-info "localhost" "root")
(defun get-auth-info (host user &optional port)
(let ((info (nth 0 (auth-source-search
:host host
:user user
:port port
:require '(:user :secret)
:create t))))
(if info
(let* ((port (plist-get info :port))
(secret-maybe (plist-get info :secret))
(secret
(if (functionp secret-maybe)
(funcall secret-maybe)
secret-maybe)))
(list port secret))
nil)))
(defun rsync-filter (proc string)
(cond
((string-match
"^\\([a-zA-Z0-9_\\-\\.]+\\)@\\([a-zA-Z0-9_\\-\\.]+\\)'s password: "
string)
(let* ((user (substring string (match-beginning 1) (match-end 1)))
(host (substring string (match-beginning 2) (match-end 2)))
(password (car (cdr (get-auth-info host user)))))
(process-send-string proc (concat password "\n"))))
((not (or (string-match "files\\.\\.\\.\r" string)
(string-match "files to consider\n" string)))
(with-current-buffer (messages-buffer)
(let ((inhibit-read-only t))
(goto-char (point-max))
(when (not (bolp))
(insert "\n"))
(insert string)
(when (not (bolp))
(insert "\n")))))))
(defun rsync-remote ()
"Use rsync to a remote server via ssh. Back-up your data first!!!"
(interactive)
(let* (
(host "localhost")
(username "root")
(port (or (car (get-auth-info host username))
(number-to-string (read-number "Port: "))))
(source
(let ((dir (expand-file-name (locate-user-emacs-file "elpa/"))))
(if (file-directory-p dir)
dir
(let ((debug-on-quit nil)
(msg (format "`%s` is not a valid directory." dir)))
(signal 'quit `(,msg))))))
(target "/private/var/mobile/elpa/")
(ssh "/usr/bin/ssh")
(rsync "/usr/bin/rsync")
(rsync-include-file "/path/to/include-file.txt")
(rsync-exclude-file "/path/to/exclude-file.txt")
(rsh (concat "--rsh=ssh -p " port " -l " username))
(host+target (concat host ":" target)))
(start-process
"rsync-process"
nil
rsync
"-avr" ;; must specify the `-r` argument when using `--files-from`
"--delete"
;; The paths inside the exclusion file must be relative, NOT absolute.
;;; (concat "--files-from=" rsync-include-file)
;;; (concat "--exclude-from=" rsync-exclude-file)
rsh
source
host+target)
(set-process-filter (get-process "rsync-process") 'rsync-filter)
(set-process-sentinel
(get-process "rsync-process")
(lambda (p e) (when (= 0 (process-exit-status p))
(message "rsync-remote: synchronizing ... done."))))))
(defun rsync-local ()
"Use rsync locally -- e.g., over a trusted home network.
Back-up your data first!!!"
(interactive)
(let (
(rsync-program "/usr/bin/rsync")
(source
(let ((dir (expand-file-name
(file-name-as-directory
(read-directory-name "Source Directory: " nil nil nil nil)))))
(if (file-directory-p dir)
dir
(let ((debug-on-quit nil)
(msg (format "`%s` is not a valid directory." dir)))
(signal 'quit `(,msg))))))
(target (expand-file-name
(file-name-as-directory
(read-directory-name "Target Directory: " nil nil nil nil)))))
(unless (y-or-n-p (format "SOURCE: %s | TARGET: %s" source target))
(let ((debug-on-quit nil))
(signal 'quit `("You have exited the function."))))
(start-process "rsync-process"
nil
rsync-program
"--delete"
"-arzhv"
source
target)
(set-process-filter (get-process "rsync-process") #'rsync-process-filter)
(set-process-sentinel
(get-process "rsync-process")
(lambda (p e)
(when (= 0 (process-exit-status p))
(message "Done!"))))))