If you have to use wget command with proxy server to download content from servers outside your organization.
You have these options.
1. configure /etc/wgetrc file ... this will affect all users on LPAR (replace addresses with your proxy server address)
use_proxy=yes
http_proxy=127.0.0.1:8080
https_proxy=127.0.0.1:8080
2. create/configure file ~/.wgetrc in concrete user's home directory
use_proxy=yes
http_proxy=127.0.0.1:8080
https_proxy=127.0.0.1:8080
3. run wget command with this option
wget ... -e use_proxy=yes -e http_proxy=127.0.0.1:8080