ss+privoxy代理配置

0. 安装privoxy:
1. 配置/etc/shadowsocks.json,指向代理服务器，启动ss代理客户端sh run-shadowsocks-local.sh
2. 配置/etc/privoxy/config,指向代理服务器，启动privoxy:systemctl start privoxy
3. 修改环境变量，配置本机的http/https/ftp走代理,source env-export.sh