终端设置全局代理

export http_proxy="http://127.0.0.1:1080"
export https_proxy="http://127.0.0.1:1080"

终端取消全局代理

unset http_proxy
unset https_proxy
unset ftp_proxy
unset all_proxy
unset no_proxy

查看是否还存在代理

env | grep -i proxy

PS : 清空代理需要重新打开 terminal