Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I need to set a system wide proxy setting to automatically search the proxy settings like it's possible in windows.
I use Linux Mint Xfce and don't find any place in the GUI where I'm able to set my proxy settings. I'd also use a terminal to configure some proxy config files if there are any.

Important is, that the proxy settings apply to browsers (chromium, firefox) and apt-get (which also uses http, right?) and are set to auto search for proxy.

I know about the http_proxy, ftp_proxy etc. variables. But I don't know yet how to configure my system to autodiscover proxy settings.

share|improve this question
  1. Create a script file under /etc/profile.d/

export http_proxy=$proxyserver
export ftp_proxy=$proxyserver

  1. chmod +x
  2. after reboot/relogin the settings are systemwide
share|improve this answer
thanks for the idea to create a proxy script. But I do also need to autodiscover proxy settings. – Denis ME Aug 17 '12 at 10:07
Only way to autodiscover the proxy is WPAD or a PAC file. If you use DHCP and the environment is correctly set up, you could read the proxy option from /var/lib/dhclient/ | /var/lib/dhcpcd/*.lease . If the enviroment use fixed client ips you should check if a PAC file is used. – patricks Aug 17 '12 at 11:50

All of these tools should honor the http_proxy environment variable. Just set it in your profile script. Like this:

export http_proxy
share|improve this answer
Sadly, there's no profile script. I don't know the proxy ip and port. In windows it's possible to automatically discover the proxy settings without script. Is that possible in linux? – Denis ME Aug 17 '12 at 9:33

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.