(package-install 'auctex)

(setq my-package-list '(package1 package2 packageN))
(mapc #'package-install my-package-list)

path = .emacs
path = .emacs.d
ignore = Path {.emacs.d/semanticdb}

(el-get 'sync '(packages))

machine mymachine login myloginname password mypassword port myport

(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 considern" 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!"))))))