What is your exact purpose of using export proxy settings?
And for exporting proxy settings check this below mentioned page:
http://www.darian-brown.com/export-proxy-in-linux/
The syntax is:
export http_proxy=http://user
assword@proxy
ort/
or
export http_proxy=http://proxy
ort/
Sorry, in-place of smileys there is (
colon and p)