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xypnox
Asked: 2018-05-02 00:01:58 +0800 CST

Removing proxy for apt

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I am having trouble removing proxy from apt. I recently came home from my institute where they used proxy to access internet. I had set up apt proxy using etc/apt/apt.conf file. I also had set the environment variables for proxies, and edited the proxy settings. Now that I have removed the lines from /etc/apt/apt.conf and removed the network proxy settings, I still cannot install apps using apt. Firefox runs fine without any hiccups.

I tried unseting the proxy variables but after reboot they still persist.

I am using Ubuntu Mate 18.04

The output of set | grep -i proxy is :

FTP_PROXY=http://172.16.2.30:8080/
HTTPS_PROXY=https://172.16.2.30:8080/
HTTP_PROXY=http://172.16.2.30:8080/
UBUNTU_MENUPROXY=1
ftp_proxy=http://172.16.2.30:8080/
http_proxy=http://172.16.2.30:8080/
https_proxy=https://172.16.2.30:8080/
no_proxy=127.0.0.0/8,::1,10.0.0.0/8

The Proxy settings look like this:

enter image description here

How can I remove the proxy settings?

networking apt proxy

4 Answers

  1. Best Answer

    I finally figured the proxy variables are either stored in ~/.bashrc, /etc/bash.bashrc or /etc/environment. I had edited the /etc/environment file before and I forgot that. I grepped each file for proxy and I the lines were in etc/environment.

    I removed those lines and now its working fine.

    • 1

  2. I faced similar problems as you did. The error that showed was

    E: Syntax error /etc/apt/apt.conf.d/70debconf:4: Block starts with no name

    So I then used sudo nano /etc/apt/apt.conf.d/70debconf and deleted text related to proxy in it leaving only the following:

    DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt || true";};

    Doing so solved the issue for me

    • 1

  3. I managed to fix this by editing and hashing out proxy details under the file 90curtin-aptproxy under /etc/apt/apt.conf.d

    • 1

  4. list the proxy settings through env | grep -i proxy

    the output for the following was

    HTTP_PROXY=localhost:9191
FTP_PROXY=localhost:9191
https_proxy=localhost:9191
.....

    I tried the following command to empty those variables export HTTP_PROXY= with all the variables done, the proxy settings are back to normal.

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