My Emacs init.el file for a pleasant (if possible) usage on macOS

init.el

;; Added by Package.el.  This must come before configurations of
;; installed packages.  Don't delete this line.  If you don't want it,
;; just comment it out by adding a semicolon to the start of the line.
;; You may delete these explanatory comments.
(package-initialize)

;; Disable tool bar and menu bar in GUI
(menu-bar-mode 0)
(tool-bar-mode 0)

;; Display line numbers
(global-linum-mode t)
;; Display column numbers
(column-number-mode t)

;; Use recent file list
(recentf-mode t)

(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(inhibit-startup-screen t)
 '(ns-alternate-modifier (quote none))
 '(ns-function-modifier (quote meta))
 '(package-selected-packages
   (quote
    (reveal-in-osx-finder markdown-preview-mode alchemist markdown-mode magit yaml-mode)))
 '(save-interprogram-paste-before-kill t))

(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 )

;; Use MELPA package repository.
(require 'package)
(let* ((no-ssl (and (memq system-type '(windows-nt ms-dos))
                    (not (gnutls-available-p))))
       (proto (if no-ssl "http" "https")))
  ;; Comment/uncomment these two lines to enable/disable MELPA and MELPA Stable as desired
  ;;(add-to-list 'package-archives (cons "melpa" (concat proto "://melpa.org/packages/")) t)
  (add-to-list 'package-archives (cons "melpa-stable" (concat proto "://stable.melpa.org/packages/")) t)
  (when (< emacs-major-version 24)
    ;; For important compatibility libraries like cl-lib
    (add-to-list 'package-archives '("gnu" . (concat proto "://elpa.gnu.org/packages/")))))
(package-initialize)

;; Load custom libraries
(add-to-list 'load-path "~/.emacs.d/custom")
(require 'uuidgen)

;; Set up custom modes
(add-to-list 'auto-mode-alist '("/\\.xonshrc\\'" . python-mode))

;; Key bindings
(global-set-key (kbd "C-x g") 'magit-status)
(global-set-key (kbd "C-x c") 'magit-clone)
(global-set-key (kbd "C-S-n") 'scroll-up-line)
(global-set-key (kbd "C-S-p") 'scroll-down-line)
(global-set-key (kbd "C-S-d") 'backward-delete-char)
(global-set-key (kbd "C-S-f") 'kill-word)
(global-set-key (kbd "C-S-b") 'backward-kill-word)