Homebrew下载源修改

https://mirrors.tuna.tsinghua.edu.cn/help/homebrew/

export HOMEBREW_INSTALL_FROM_API=1
export HOMEBREW_API_DOMAIN="https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles/api"
export HOMEBREW_BOTTLE_DOMAIN="https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles"
export HOMEBREW_BREW_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git"
export HOMEBREW_CORE_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git"
export HOMEBREW_PIP_INDEX_URL="https://pypi.tuna.tsinghua.edu.cn/simple"

Gem下载源修改

# 移除gem默认源，改成ruby-china源
$ gem sources -r https://rubygems.org/ -a https://gems.ruby-china.com/
# 使用Gemfile和Bundle的项目，可以做下面修改，就不用修改Gemfile的source
$ bundle config mirror.https://rubygems.org https://gems.ruby-china.com
# 删除Bundle的一个镜像源
$ bundle config --delete 'mirror.https://rubygems.org'