apt-get doesn't work behind a proxy
Solution 1
To use apt-get through a proxy, I do the following - you do need to be able to access the internet (e.g. through a browser like Firefox) though:
sudo apt-get --print-uris install PROGRAM
This prints the urls (and other info like md5sums) of the packages needed to carry out the installation, so you can download them. For example, using supertux
:
wilf@comp:~$ sudo apt-get install --print-uris supertux
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
supertux-data
The following NEW packages will be installed
supertux supertux-data
0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 59.4 MB of archives.
After this operation, 80.0 MB of additional disk space will be used.
Do you want to continue [Y/n]? Y
'http://gb.archive.ubuntu.com/ubuntu/pool/universe/s/supertux/supertux-data_0.3.3-6_all.deb' supertux-data_0.3.3-6_all.deb 58590640 MD5Sum:68bd36f2c262f7caed1b5c947977202a
'http://gb.archive.ubuntu.com/ubuntu/pool/universe/s/supertux/supertux_0.3.3-6_i386.deb' supertux_0.3.3-6_i386.deb 804782 MD5Sum:a49c6c3c918bae2c968b3da6ac725b06
Then download the .deb
files from the given links (preferably into a empty folder), through a browser that works through the proxy etc, and you can then install them using Software Centre; or using cd /FOLDER/WITH/DOWNLOADED-DEB-FILES
and one of these commands in terminal
dpkg -i *.deb
gdebi *.deb
This is a bit slow and annoying, but seems to work over HTTP proxies. You can also get the packages from http://packages.ubuntu.com/
Solution 2
I've found that the following works for me, as far as using apt from the terminal alone is concerned:
- Leave
/etc/apt/apt.conf
empty, so that apt falls back on the$*_proxy
environment variables. -
Make sure your environment variables are properly set: For example, you could add in .bashrc:
http_proxy="http://username:password@proxyserver:port" # And so on for other proxy settings like https_proxy and ftp_proxy
If your username or password contains any special characters, they may need to be URL encoded.
-
Make sudo use your environment variables and not its own. This is done by editing the
/etc/sudoers
file. Be careful while doing this! Use only thesudo visudo
command to edit the file; any errors may leave you unable to re-enter sudo mode! Add the following:Defaults env_keep+="http_proxy https_proxy ftp_proxy socks_proxy"
This ensures that sudo retains these variables when executing
sudo apt-get install ...
etc.
I found this out from Ubuntu's apt-get howto.
Do let me know if it works :)
Solution 3
To add to Wilf, I ran the following command to automate the download through Chrome. Firefox, I understand can be even simpler.
yes | sudo apt-get --print-uris install PROGRAM-NAME-HERE | grep http | awk '{print $1 }' | tr -d \' | while read -r line; do google-chrome "$line"; done
EDIT: so the whole answer will be in one post, once the downloads finish simply ran
cd /FOLDER/WITH/DOWNLOADED-DEB-FILES; dpkg -i *.deb
Solution 4
I don't know if you tried this already but what about:
export http_proxy=proxy.mycompany.com:80
You can check it afterwards with:
echo $http_proxy
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Greg
Updated on September 18, 2022Comments
-
Greg over 1 year
My company uses an HTTP proxy and our various Ubuntu 12.04 servers therefore need to be configured properly, namely by setting
\etc\apt\apt.conf.d\80proxy
to:Acquire::http::Proxy "http://proxy.mycompany.com:80"; Acquire::http::No-Cache true;
Now, since a few days, this method suddenly stopped working: I run into sum mismatch errors. I have tried all the usual tricks found on stackoverflow or on the web, among others:
sudo rm -fR /var/lib/apt/lists/*
sudo apt-get clean
But nothing seems to work. I even switched to a FTP server, without any luck. What's a radical solution to this problem? Is it likely that the proxy server has some kind of issue? What could it be?
Using Ubuntu 12.04
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Greg over 10 yearsInteresting approach, I didn't know about it.
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Greg over 10 yearsYes, unfortunately I tried pretty much all these little tricks found on the web :-(
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eliocapelati over 9 yearsDid work for me! tks
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Wilf almost 9 yearsI think you can use
set | grep -i proxy
to check if the proxy is set - probably the reason I found the other method was because it somehow wasn't set. -
Rodrigo almost 8 yearsInstead of SOLVING the problem, always WORKAROUNDS... Welcome to Linux world!
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uav almost 5 yearsHahaha, I did that wrong for years and always configured the proxy for apt additionally. With all due respect, what idiot came up with the idea that you need an empty configuration file for apt to read the http_proxy variable? Is there a use case where you have defined the proxy in /etc/environment and apt should not use it? OK, if I want to use apt-cacher-ng, but then I can do it explicitly in apt.conf?!