How to Set Proxy Settings on Linux command line or Terminal

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In a Linux Like operating system, we have the variables like http_proxy,ftp_proxy, and https_proxy through which we can access the Internet via proxy on Linux console.

All of the above mentioned variables are can be used with tools like elinks, wget, lynx, rsync, and others.

I am assuming Linux servers that are behind the proxy servers and can get the Internet connection only via proxy settings.


Proxy Settings on Command Line

Example 1: Access http base sites via proxy, use below variable.


# export http_proxy=http://[proxy-server-ip-or-dns-name]:[Port-Number]


# export http_proxy=

Example 2: Password Protect Proxy Settings.


# export http_proxy=http://USERNAME:PASSWORD@[proxy-server-ip-or-dns-name]:PORT


# export http_proxy=http://nsit:*****

Using Above Command we have set the proxy setting along with user name and password.

Example 3: To access secure sites(https) via proxy, set below variable.


# export https_proxy=http://[proxy-server-ip-or-dns-name]:[Port-Number]


# export https_proxy=

Example 4: To access ftp based sites via Proxy, set the below variable:


# export ftp_proxy=http://[proxy-server-ip-or-dns-name]:[Port-Number]


# export ftp_proxy=

Note: As these variables are declared for the particular session, to set it permanently, define these variables in the file:

# vi /etc/bash.bashrc 
export http_proxy=
export ftp_proxy=

Example 5: Proxy Settings in APT on Ubuntu Linux.

# vi /etc/apt/apt.conf
Acquire::http::Proxy "http://[proxy-server-ip-or-dns-name]:[Port-Number]";

Example 6: Proxy Settings for RSYNC:

# export RSYNC_PROXY="http://[proxy-server-ip-or-dns-name]:[Port-Number]”


# export RSYNC_PROXY="”



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