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Every AMI publisher on EC2 decides default username is AWS credentials that should used to gain access to Linux distros Ec2 system using ssh. This post describes all default usernames in AWS for logging on to EC2 instance.

If you are bored with top utility. There is a colourful yet interactive utility in Linux, called as “htop”. This post will quickly guide you about how to install htop Linux and perform process monitoring using htop Linux.

Linux grep utility is famous for filtering the output or finding the specific words within a file. This post will touch major options available within Linux grep utility.

In the world of Linux | Unix system administration one of our tasks is to perform Linux check disk space. Performing Linux check disk space operation makes us aware about the current utilization of the mount point within the system. Here is a list of command for Linux check disk space.

Major part of sysadmin time goes into finding the cause of the load on the system eg. Finding processes which are consuming the resources. This post will help you with how to quickly find top CPU consuming processes in Linux.

We build Ec2 instances like linux instances in aws. Sometime we need to make two Ec2 instances connect each other so that they can exchange files etc. However by default this communication is not available. We need to make some configuration changes to make two Ec2 instances connect each other. Here is quick way to do so.

Using iscsi you can share block level storage to the client machine. This iscsi uses the existing ip to share and access the storage over the network.We can setup linux iSCSI target initiator , so that storage can be shared from one Linux server to the client linux machine. So Let’s setup linux iSCSI target initiator on RHEL7.

Quickly hack android with Kali Linux. We are making use of msfvenom tool within Kali linux which is best combination of Msfpayload and Msfencode.

Many times we take the Linux session using famous tool Putty. What if you need to take Linux remote desktop session (GUI) session? Answer is VNC server. This post will quickly guide you about how to take remote Linux remote desktop GUI session.

Many times we write a shell script for performing any task. Want to show the status messages with fancy way. Then you must create fancy linux banners using figlet.

Performing an linux kernel upgrade offers new features and improvements. Here is a quick way to perform Linux kernel upgrade.

In Bash shell scripting we can perform comparison of the numbers. To perform bash compare numbers operation you need to use “test” condition within if else loop. This Post will quickly tell you how to bash compare numbers.

Loops plays an important role in bash scripting. After For Loop another loop comes in to picture is Bash while loop. Basically Bash while loop executes sets of command till any condition is satisfied. Once condition turns false execution flow gets out of the bash while loop.

Splash screen is nothing but the picture that’s gets displayed in the background while booting the Linux operating system.

Splash screen definitions are defined in the grub.conf file and this splash screen image file resides inside the /boot partition. This tutorial will Teach how to change splash screen.

Logical Volume Manager (LVM) is a software which provides the abstraction layer over the physical disk. Which hides the details regarding where does data stored on the disk or from where the data comes from actual physical disk whenever it is requested.Before learning how to create lvm lets learn terms in LVM so that it will become easy to grasp the commands about LVM administration.

Linux I/O Scheduler is a process of accessing the block I/O from storage volumes. I/O scheduling is sometimes called disk scheduling. Lets learn about changing the IO scheduler

In almost all programming language we make use of function which is nothing but the code written as logical block for executing repetitive or recurring execution. In shell programming also we do have something called as bash function which acts the same way.In this post we will be learning more about bash function.

You know that, scp command allows us to copy files across the hosts. In this post you will find scp example by which you can copy files or directories across the hosts.

This is a tutorial about How to: linux add user to group. This post describes quick way to add user to group while creating user as well as for existing users.

Learn how to resolve bad magic number in super-block error in Linux. This process describes step by step procedure to resolve bad magic number in super-block error.