vi /etc/apt/apt.conf + Acquire::http::Proxy "http://proxy_ip:port_num/"; + Acquire::https::Proxy "http://proxy_ip:port_num/"; + Acquire::ftp::Proxy "http://proxy_ip:port_num/"; vi /etc/wgetrc + https_proxy=http://proxy_ip:port_num/ # 追記 + http_proxy=http://proxy_ip:port_num/ # 追記 + ftp_proxy=http://proxy_ip:port_num/ # 追記