add gui, mail and programming language settings

settings/shell-settings.el

@@ -0,0 +1,19 @@
+;;; shell-settings.el --- Summary  -*- lexical-binding: t -*-
+;;; Commentary:
+;;; Code:
+(use-package sh-script
+  :defer t
+  :config
+  (setq sh-basic-offset 2)
+  )
+
+(use-package powershell                            ;; https://melpa.org/#/powershell
+  :commands powershell-mode)
+
+(use-package eshell-mode
+  :defer t
+  :init
+  (setq eshell-directory-name (concat user-cache-directory "eshell/")))
+
+(provide 'shell-settings)
+;;; shell-settings.el ends here