How do I set Proxy in Raspberry Pi - Raspbian OS (or any Linux) using Command Line?

Question

I'm using my college network.Here i have set proxy to 10.30.0.1:8080 to access internet.But i'm not able to set proxy in Raspberry Pi 3.

• pankaj Kang: this question has been answered in another stackexchange postProxy settings for Raspbian Jessie

Answer 1

For apt:

Navigate to the following folder as follows:

cd /etc/apt/apt.conf.d

Create a file called 10proxy:

sudo nano 10proxy

Without authentication add this line:

Acquire::http::Proxy "http://proxyaddress:proxyport/";

Or with authentication add this line:

Acquire::http::Proxy "http://username:password@proxyaddress:proxyport/";

Make sure to include the / at the end.

For everything else:

Edit this file:

sudo nano /etc/environment

Add this line (with authentication):

export http_proxy="http://username:password@proxyaddress:port/"

Or without authentication:

export http_proxy="http://proxyaddress:port/"

• HeatfanJohn: Does this set the http_proxy and https_proxy environment variables? Or does this only setup a proxy for apt?
• Joe: I made a mistake! See my edited answer for the full solution
• Sayan Seth: The method for apt is working.But for everything else: method is not working.Can you tell me that what do you mean by 'host in 'export http_proxy="host:port" ? I have tried by putting Proxy Address 10.30.0.1:8080 but it is not working. @Veroxi .Thanks for previous answer.
• Joe: host should be just the IP (not the port)
• MisterSeajay: Updated this answer to replace the word "host" with "proxyaddress" in case anyone is confused with the local host.

Answer 2

As of Raspbian GNU/Linux 10 (buster), the syntax for defining environment variables has changed from the older syntax shown in other answers. The export keyword is no longer supported in the /etc/environment file, and causes errors like this:

invalid variable name "export http_proxy", ignoring.

Edit /etc/environment and set 3 lines to proxy both secure insecure requests:

http_proxy="http://username:password@proxyaddress:port/"
https_proxy="http://username:password@proxyaddress:port/"
no_proxy="localhost,127.0.0.1"

Restart the system for changes to take effect. After rebooting, open a terminal and type the following to see if the variables are present:

env | grep proxy

Note that Chromium (the default browser) often caches pages even on a "hard refresh," so your proxy settings may not appear to work. Use an incognito window to open a test site.

Answer 3

The proxy on any Linux environment can be set using two files

1. /etc/environment

2. /etc/apt/apt.conf.d/01proxy (sometimes this file doesnt exist so create one)

now firstly see what are the default setting in these two files using cat command

1.cat /etc/environment ==> create a backup if something goes wrong

2.cat /etc/apt/apt.conf.d/01proxy

using a simple bash script you can disable or enable proxy for terminal written by me : https://github.com/k1941996/Proxy_switcher/blob/master/switch_proxy.txt

simply change the proxy according to your network.

Add these files in your .bashrc file and you can directly switch proxy using simple commands like enableproxy and disableproxy