export all_proxy="socks://localhost:9050/"
export http_proxy="http://localhost:8118/"
export https_proxy="http://localhost:8118/"
export ftp_proxy="http://localhost:8118/"
export no_proxy="localhost,127.0.0.0/8,::1"

export | grep -e 'proxy'

unset all_proxy
unset http_proxy
unset https_proxy
unset ftp_proxy
unset no_proxy

service privoxy stop