On Thu, Sep 28, 2017 at 07:41:42PM +0530, Sumit Jain wrote: > While I was installing sudo in Debian it is not getting installed . It > shows that media change please insert the disc labelled.
You have configured your system to look for packages on a CD or DVD. The configuration is in /etc/apt/ in the sources.list file or the sources.list.d directory. You must configure at least one reachable apt repository to get this to work. For example: deb http://ftp.us.debian.org/debian/ stretch main contrib non-free deb http://ftp.us.debian.org/debian/ stretch-updates main contrib non-free deb http://security.debian.org/ stretch/updates main -dsr-
