How to use markers and perform text selection in Vim

Zabihah Halal Vitamins
How to use markers and perform text selection in Vim
When using GUI-based text/source code editors, some features are a given, such as selecting text. I mean, most of us won’t even consider this a feature anymore. But that’s not the case with command line based editors like Vim. Specifically for Vim, when only using keyboard, you’ll have to learn certain commands in order to select text the way you want. In this tutorial we will discuss this feature as well as the ‘marks’ feature of Vim in detail.

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How to install GlusterFS with a replicated high availability storage volume on Ubuntu Linux 16.04 LTS

How to install GlusterFS with a replicated high availability storage volume on Ubuntu Linux 16.04 LTS

I want to share my web server DocumentRoot /var/www/html/ across 2 Apache web server. Both of my web servers are behind load balanced reverse proxy powered by Nginx. How do I setup and install GlusterFS (“distributed storage”) which is a scalable network filesystem on Ubuntu Linux 16.04 LTS server?
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How to setup a Linux server on Amazon AWS

Zabihah Halal Vitamins
How to setup a Linux server on Amazon AWS
This tutorial shows the creation of an Amazon EC2 Linux instance (virtual server) and how to login to that server with SSH from Windows. AWS (Amazon Web Services) is one of the leading cloud server providers worldwide. You can setup a server within a minute using the AWS platform. To get started, AWS provides a special account called “Free tier” where you can use the AWS technology free for one year with some minor restrictions.

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How to wipe a signature from a disk device on Linux with wipefs command

How to wipe a signature from a disk device on Linux with wipefs command

I recently decommissioned Debian Linux based nas server and moved disk from my nas server to Linux-powered desktop. However, when I run fdisk command, I am getting the following error:
    /dev/sdb: device contains a valid ‘LVM2_member’ signature; it is strongly recommended to wipe the device with wipefs(8) if this is unexpected, in order to avoid possible collisions
What is a wipefs and how do I use it on Linux?
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How to use parallel ssh (PSSH) for executing ssh in parallel on a number of Linux/Unix/BSD servers

How to use parallel ssh (PSSH) for executing ssh in parallel on a number of Linux/Unix/BSD servers
Recently I come across a nice little nifty tool called pssh to run a single command on multiple Linux / UNIX / BSD servers. You can easily increase your productivy with this SSH tool.

More about pssh

pssh is a command line tool for executing ssh in parallel on some hosts. It provides specialties includes:

  1. Sending input to all of the processes
  2. Inputting a password to ssh
  3. Saving output to files
  4. IT/sysadmin taks automation such as patching servers
  5. Timing out and more

Let us see how to install and use pssh on Linux and Unix-like system.

pssh-welcome
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How to forcefully shutdown a guest VM using virsh command on Linux KVM

How to forcefully shutdown a guest VM using virsh command on Linux KVM

I used the command ‘virsh shutdown vm1’ to shut down a guest named vm1 using the virsh command. However, it is still running, and my vm1 is not responding to an ssh session. Is there is a way to forcefully stop or kill a guest VM using the virsh command from host server?
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How to find all hard links in a directory on Linux

How to find all hard links in a directory on Linux

I have a file named /etc/passwd i and I would like to find all hard links to this file in a directory. How do I find out all other hard links to the /etc/passwd in /backups/ directory? How can find all hard links to a given file using Linux or Unix command line option?
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How to set rsync speed limit from eating all bandwidth with –bwlimit option

How to set rsync speed limit from eating all bandwidth with –bwlimit option

The rsync command is eating all my bandwidth from a backup script and generating tons of I/O. How do I set a limit for file transfer speed of rsync command on Linux or Unix-like system? How can I keep my rsync script from using all of my bandwidth?
Halal Vitamins

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How to display cpu wise usage using top command on FreeBSD Unix operating system

How to display cpu wise usage using top command on FreeBSD Unix operating system

I recently switched from Linux to FreeBSD. On Linux, I press 1 which show me a breakdown of CPU usage per CPU, but it is not working on FreeBSD. How do I find out the usage of individual CPU core usage using the top command on FreeBSD operating system?
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How to let users securely edit files using sudoedit on Linux

Zabihah Halal Vitamins
How to let users securely edit files using sudoedit on Linux
Suppose you are a system administrator in a company where teams mostly work on Linux with limited privileges. Now imagine a situation where members of one of the teams – as part of some new work – need to frequently edit a file that requires superuser privileges. What would you do?

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