easily "install" and run spacemacs

home bin spacemacs

#!/usr/bin/env bash

# download and modify spacemacs
# s.t. we do not have to overwrite our current emacs configuration
# ideally:
# 0. export PATH="$PATH:$HOME/bin"
# 1. put this script in $HOME/bin/spacemacs
# 2. use "spacemacs" to run spacemacs

cfgd=$HOME/.spacemacs.d/
init=$cfgd/init.el

[ ! -d $cfgd ] && \
  git clone --recursive http://github.com/syl20bnr/spacemacs $cfgd

grep "$cfgd" $init >/dev/null || \
 sed -i "1i (setq user-emacs-directory \"$cfgd\")" $init
emacs -q -l $cfgd/init.el