MAC安装light7 错误提示

1.gem executables will not run

WARNING:  You don't have /Users/hexincaifu/.gem/ruby/2.3.0/bin in your PATH,
          gem executables will not run.

解决路径环境变量
export PATH="/Users/hexincaifu/.gem/ruby/2.3.0/bin:$PATH

https://askubuntu.com/questions/406643/warning-you-dont-have-a-directory-in-your-path-gem-executables-will-not-run

2.While executing gem ..(Gem::FilePermissionError)

解决用下面命令代替sudo
gem install mygem --user-install

https://stackoverflow.com/questions/14607193/installing-gem-or-updating-rubygems-fails-with-permissions-error