edit system environments

open ~/.bash_profile

if not exist, create one

touch ~/.bash_profile

add this to script end

# Brew
export HOMEBREW_BREW_GIT_REMOTE="https://mirrors.ustc.edu.cn/brew.git"
export HOMEBREW_CORE_GIT_REMOTE="https://mirrors.ustc.edu.cn/homebrew-core.git"
export HOMEBREW_BOTTLE_DOMAIN="https://mirrors.ustc.edu.cn/homebrew-bottles"
export HOMEBREW_API_DOMAIN="https://mirrors.ustc.edu.cn/homebrew-bottles/api"
export HOMEBREW_NO_ENV_HINTS="1"

reload script to take effect

source ~/.bash_profile