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Asked: 2011-12-22 01:00:41 +0800 CST

how to install packages with apt-get on a system connected via proxy?

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I've got an Ubuntu 11.10 system connected via a proxy to the internet, and I would like to install packages via apt-get. When I try to do that I get this error message:

sudo apt-get install libboost-program-options-dev
[...]
Err http://gb.archive.ubuntu.com/ubuntu/ oneiric/main libboost1.46-dev i386 1.46.1-5ubuntu2
407  Proxy Authentication Required

Any ideas?

apt

3 Answers

  1. Best Answer

    This method worked for me.....just have a try...

    check the file /etc/apt/apt.conf

    The contents were, 

    Acquire::http::proxy "http://<proxy>:<port>/";
Acquire::ftp::proxy "ftp://<proxy>:<port>/";
Acquire::https::proxy "https://<proxy>:<port>/";

    This was the reason why you could reach proxy but couldn't get past it, since there is no username password information. So just put that info into it..

    Acquire::http::proxy "http://<username>:<password>@<proxy>:<port>/";
Acquire::ftp::proxy "ftp://<username>:<password>@<proxy>:<port>/";
Acquire::https::proxy "https://<username>:<password>@<proxy>:<port>/";

    save the file and you are done...

    BROTIP: More better add these lines in another file, /etc/apt/apt.conf.d/80proxy. This will ensure that after a version upgrade changes won't be lost.

    • 77

  2. To configure a proxy temporary, set the http_proxy environment variable. If the proxy is proxy.example.com on port 8080 and you need to authenticate with username user and password pass, run:

    sudo http_proxy='http://user:[email protected]:8080/' apt-get install package-name

    To set such a proxy permanently, create /etc/apt/apt.conf.d/30proxy containing:

    Acquire::http::Proxy "http://user:[email protected]:8080/";

    The changes are immediately visible the next time you run apt.

    • 51

  3. An alternative is to use Synaptics Package Manager, setting in its Preferences the proxy to which you want to connect. You can find the configuration using this path: Settings -> Preferences -> Network

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