Wget

If you Linux server is behind a proxy server you will need to tell the WGET configuration file that they need to use a proxy server.

Edit the file /etc/wgetrc removing the comments to use

http_proxy = http://proxy.yoyodyne.com:18023/
ftp_proxy = http://proxy.yoyodyne.com:18023/

and don't forget to set:

use_proxy = on

Make sure you have a look at the page bashrc