命令行启动代理
alias proxysetting="networksetup -setwebproxy Wi-Fi 127.0.0.1 7890; networksetup -setsecurewebproxy Wi-Fi 127.0.0.1 7890"
alias sysproxy="networksetup -setwebproxystate Wi-Fi on && networksetup -setsecurewebproxystate Wi-Fi on"
alias unsysproxy="networksetup -setwebproxystate Wi-Fi off && networksetup -setsecurewebproxystate Wi-Fi off"修改时区
sudo systemsetup -settimezone Asia/Shanghai