gmake
brew install make
export
gnu find
brew install findutils 
/usr/local/Cellar/findutils/4.8.0_1/bin:/usr/local/Cellar/make/4.3/bin:/usr/local/opt/make/libexec/gnubin:$PATH

30*1024*1024*1024/512
62914560  = 30G
hdiutil attach -nomount ram://62914560  

newfs_hfs -s -v 'OpenWrt' /dev/disk2

vim ~/.zshrc
# proxy list

alias proxy='export all_proxy=socks5://127.0.0.1:1080'
alias unproxy='unset all_proxy'
source ~/.zshrc
proxy
curl cip.cc