Ubuntu 20 Web Proxy Configuration

To configure a web proxy for Ubuntu for every user edit the /etc/environment file:

sudo nano /etc/environment

Add the following lines after the PATH line and adjust accordingly:

export HTTP_PROXY="[username]:[password]@[proxy-web-or-IP-address]:[port-number]"
export HTTPS_PROXY="[username]:[password]@[proxy-web-or-IP-address]:[port-number]"
export FTP_PROXY="[username]:[password]@[proxy-web-or-IP-address]:[port-number]"
export NO_PROXY="localhost,127.0.0.1,::1"

As an example, this line for a web proxy with no authentication at 192.168.120.3 on port 3128 would be:

export HTTP_PROXY="192.168.120.3:3128"
export HTTPS_PROXY="192.168.120.3:3128"
export FTP_PROXY="192.168.120.3:3128"
export NO_PROXY="localhost,127.0.0.1,::1"