Some Commonly Asked Questions On GNU/Linux Answered


To increase familiarity with GNU/Linux for an average user, here I share you a detailed introduction to GNU/Linux so you can get acquainted and comfortable with GNU/Linux.

Following are some of the question answers I found during my usual searches on web and I am sure this one will be helpful for someone who would like to give a shot on GNU/Linux.

[0]Understanding the term ‘Linux’ and ‘GNU’ – Linux is basically the engine for your operating system. The GNU/Linux naming controversy Read More »

Disabling password prompt for sudo users

Most often GNU/Linux users come across the sudo utility that allows users to run programs with the security privileges of another user (normally the superuser, or root). Its name is a concatenation of the su command (which grants the user a shell of another user, normally the superuser) and “do”, or take action. But on executing any command with sudo requests the user to provide his own password once and can be used afterwards. For that to occur the particular user must be in sudoers file (refer to my post regarding adding user for sudo privileges.

$ sudo vim /etc/sudoers
[sudo] password for anoop:

To disable this sudo password prompt edit the /etc/sudoers file as follows.

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vnStat for monitoring network traffic through interfaces


We all live in a world surrounded by networks. The most important among them, and no doubt in that, is internet technology. When we relate networks to the computer systems, it is GNU/Linux dominating this particular field (again no doubt). Organizations working under computer networks usually run on GNU/Linux environment. So there is a great need for monitoring the network traffic. vnStat arrives in such a situation rendering a great help towards the network world. It is a console-based network traffic monitor. It keeps a log of hourly, daily and monthly network traffic for the selected interface(s). vnStat can be used even without root permission on most systems. It will be helpful for some of you for accounting the amount of data being transfered from our system to the outside world. I will brief some basic command-line options to start with. Install the utility from your distro’s default package manager.

The basic format for vnStat is
vnstat [options]

For creating a new database for a particular interface
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