I installed Ubuntu 12.04 and it is running just fine. I only have a problem, I connect to the internet through a proxy at my college, but there are some url's that I don't need the proxy for, so my question is: How can I exempt a url from my proxy configuration on Ubuntu?
You may need a proxy configuration script (PAC). It is a universal solution, and works in any DE, any platform, with any browser.
In your proxy settings, either in browser, or from
Open a text editor, ( Search in Dash to find gedit -the default text editor) and write something like this. Save it to the path entered above, when done. Modify to your needs.
As you see, complex configurations can be made out of PAC scripts. The above script skips proxy for any address of type *.example.com and *.qwerty.org and any ip that matches the ranges. All other requests are routed through proxy server.
P.S: I've seen a empty line at top and bottom in all PAC scripts I've seen so far, so I suggest you add a newline both at top and mottom. Just in case...
If you are just using an http proxy you can open gconf-editor (
If you are using a socks5 proxy it's a little more complicated to set system wide. However for certain individual programs it's quite easy. For Firefox for example, go to
If you use Chromium you can run it with command line switches, for example
Some other applications will have similar functionality, and you can use a wrapper program like