how to permanently change safari user agent

gistfile1.txt

 defaults write com.apple.Safari CustomUserAgent "\"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0\""
defaults delete com.apple.Safari CustomUserAgent

init.toml

#=============================================================================
# dark_powered.toml --- dark powered configuration example for SpaceVim
# Copyright (c) 2016-2017 Wang Shidong & Contributors
# Author: Wang Shidong < wsdjeg at 163.com >
# URL: https://spacevim.org
# License: GPLv3
#=============================================================================

# All SpaceVim option below [option] section
[options]
    # set spacevim theme. by default colorscheme layer is not loaded,
    # if you want to use more colorscheme, please load the colorscheme
    # layer
#colorscheme = "gruvbox"
#   colorscheme = "dracula" 
    colorscheme = "onedark"
    #colorscheme = "SpaceVim"
    background = "dark"
    # Disable guicolors in basic mode, many terminal do not support 24bit
    # true colors
    enable_guicolors = false 
    # Disable statusline separator, if you want to use other value, please
    # install nerd fonts
    statusline_separator = "arrow"
    statusline_inactive_separator = "arrow"
    buffer_index_type = 4
    enable_tabline_filetype_icon = true
    enable_statusline_display_mode = false
    automatic_update = 1
    guifont = "UbuntuMono Nerd Font:h11"
#    pythonthreedll = "/Library/Frameworks/Python.framework/Versions/3.6/Python"
    clipboard = "unnamed"

[[layers]]
  name = "gtags"
  gtagslabel = "pygments"
  
[[layers]]
    name = "ctrlspace"

[[custom_plugins]]
    name = 'liuchengxu/space-vim-dark'

[[custom_plugins]]
    name = 'sei40kr/SpaceVim-onedark'

[[custom_plugins]]
   name = 'dracula/vim'

[[custom_plugins]]
   name = 'neomake/neomake'
   merged = 0

[[layers]]
  name = "lang#typescript"

[[custom_plugins]]
  name = 'tasn/vim-tsx'
  merge = 0
[[custom_plugins]]
  name = 'artur-shaik/vim-javacomplete2'
  merged = 0

[[custom_plugins]]
  name = 'dbeniamine/cheat.sh-vim'
  merged = 0

  
# Enable autocomplete layer
[[layers]]
name = 'autocomplete'
auto-completion-return-key-behavior = "complete"
auto-completion-tab-key-behavior = "smart"

[[layers]]
  name = "lang#java"

[[layers]]
 name = "lang#c"

[[layers]]
 name = "lang#json"
 
[[layers]]
 name = "lang#markdown"

[[layers]]
 name = "lang#python"

[[layers]]
 name = 'github'

[[layers]]
 name = 'git'

[[layers]]
  name = "tools"

[[layers]]
  name = "lang#go"
  
[[layers]]
  name = "VersionControl"

 
[[layers]]
name = 'shell'
default_position = 'top'
default_height = 30

init.vim

# Work in terminal Mac os X 
let g:spacevim_custom_plugins = [
      \ ['sei40kr/SpaceVim-onedark'],
      \ ]
let g:spacevim_disabled_plugins = [
      \ 'onedark.vim',
      \ ]

syntax on
colorscheme onedark

set clipboard=unnamed

vim find replace

:%s/<\/gs:\(\w*\)>/<gs:\1y><\/gs:\1y>/g
:%s/[A-Z]/\L&/g
:%s/^/<gs:/g