Ubuntu 14.04 Update – Unable to Update System from Terminal

14.04command linePROXYupdates

I am using Ubuntu 14.04. Recently my institute changed network proxy settings. After that, I am unable to update anything from my terminal. Also, new installations from terminal are not possible. I keep getting proxy verification error. However, I am able to do installations from Synaptic Package Manager.
I have made necessary changes on my apt conf file and have added my latest proxy settings with ID and password.
Please help me resolve the issue.
Thanks in advance

Best Answer

Add the following parameter to your .bashrc file. Replace username, password, proxyserver and port with appropriate values.

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

Add similar entries for other proxies: https_proxy ftp_proxy and socks_proxy. After adding these settings source the .bashrc file by entering the following command on terminal

source .bashrc

Now try to update with sudo apt-get