Resolving sourceforge.net (sourceforge.net)... failed: Name or service not known.
wget: unable to resolve host address ‘sourceforge.net’

# sudo vim /etc/resolv.conf

nameserver 192.168.1.1
nameserver 8.8.8.8
nameserver 4.4.4.4

# sudo vim /etc/resolvconf/resolv.conf.d/base

nameserver 192.168.1.1
nameserver 8.8.8.8
nameserver 4.4.4.4

# sudo /etc/init.d/networking restart

$ env | grep proxy

http_proxy=http://foo.bar:3128
no_proxy=localhost,127.0.0.1

$ export http_proxy="http://foo.bar:8080"

$ export http_proxy="http://username:password@foo.bar:8080"

$ echo "export http_proxy=http://foo.bar:8080/" | tee -a ~/.bashrc

vim ~/.wgetrc

http_proxy=http://foo.bar:8080

wget --no-proxy http://10.0.0.1/file.tgz

wget --proxy-user=username --proxy-password=password http://foo.bar/file.tgz

proxy_user=username
proxy_password=password