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When I type

set | grep -i proxy

I see all environmental variables which refers to proxy settings. I understand the meaning of http_proxy and ftp_proxy but what is all_proxy used for and where can I change it ?

It has been added to my environment variables when I used gnome-network-properties application. Why socks is specified there as a protocol?

all_proxy=socks://my_proxy:port/
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up vote 2 down vote accepted

I found a post in a mailing list which says:

We already export http,ftp,https proxy environment variables. Some environments, GNOME for instance, place the socks proxy in ALL_PROXY and all_proxy. Export it as well.

Here is the post http://lists.o-hand.com/poky/2431.html

So it's for the SOCKS proxy in gnome.

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For those who (as me) were not familiar with socks protocol en.wikipedia.org/wiki/SOCKS –  tommyk Feb 10 '11 at 7:28
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