安装rvm时警告我已经有~/.profile文件，要我加入下面一行，应该怎么加？

• WARNING: You have '~/.profile' file, you might want to load it,
  to do that add the following line to '/home/frozen/.bash_profile':

  source ~/.profile
  怎么加？

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echo "source ~/.profile" >> ~/.bash_profile

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建议rbenv吧