Frequently Asked Questions

How to fix: VirtualBox Callee RC: NS_ERROR_FACTORY_NOT_

Question : How to fix: VirtualBox Callee RC: NS_ERROR_FACTORY_NOT_REGISTRED Answer: remove   tmp   vbox  files  under tmp   and  (dot)vbox-usernames    directory rm -rf    /tmp/.vbox* This  method  was  tested  under   Fedora 14 ...

How To Extract Images From Videos Using ffmpeg

Hi unixmen readers, Have you ever wanted to extract images from a video file? It is possible to do such thing in Linux and for...

How to upgrade from fedora 23 to fedora 24

Fedora Project, proudly announced the release of Fedora 24 version, Now it is available to Download and Install it on your machines. we can...

Install Apache, MariaDB And PHP In FreeBSD10

This tutorial describes how to install AMP(Apache, MariaDB, PHP) server in FreeBSD 10. We assume you have the FreeBSD Ports Collection installed. If not, do: portsnap...

How To Enable Minimize and Move Windows Buttons in Elementary OS...

Hey Guys, As the title of the post says, am going to show you how to do the three items listed below in Elementary OS...

Linux Troubleshooting: How To Fix ‘lsb_release’ Command Not Found In CentOS?

Recently, I came through an error called "You must install lsb_release binary before launching this install script." while testing "Shinken" network monitoring tool. After...

How To Check Which Program Is Using A Port Via Terminal

You are sometimes trying to install or configure a program and bind it to a port and it throws an error. That means some...

Install Nginx and php-fpm in Slackware 14.1 via Slackbuilds method

Nginx (pronounced "engine-x") is an open source reverse proxy server for HTTP, HTTPS, SMTP, POP3, and IMAP protocols, as well as a load balancer,...

Dolphin Can't Move Files to Trash

Question: Dolphin Can't Move Files to Trash. How to solev this ? Answer   I had  the same problems deleting  to the  Trash in OpenSuse 11.4   KDE ...

How To Find IP Conflicts In Linux

You all know what IP addresses are, right? How they are assigned to devices on a network to represent them. They are assigned by...

How To Setup PostgreSQL Replication On CentOS

Nowadays, services can't stop, and is system's administratos reponsability keep applications, services and servers on line. Let's make an scenario with 2 virtual machines...

YUM: Thread died in Berkeley DB library, Fatal error,

When i run Yum update in fedora,  i got this error Error : # yum updaterpmdb: Thread/process 7977/139764163434432 failed: Thread died in Berkeley DB libraryerror: db3...

How To Install Manjaro XFCE 0.8.8 [GUI] Step-by-Step Guide

Manjaro is a user-friendly Linux distribution based on the independently developed Arch operating system. Developed in Austria, France, and Germany, Manjaro provides all the...

Useful Commands for Linux Users – Episode 6

Using the command-line in your everyday activities more than the GUI sometimes shows the geek you are. If you haven't read the Episode 5...

Linux Commands Every Sysadmin Must Know

If you are a system administrator, then Linux commands are what you use everywhere, you know what they are for and how to use...

Which Linux Distribution You Should Use

We often get confuse which Linux distribution we are going to use. We think about it a lot. It mainly depends for which purpose you...

How to Change Hostname in Ubuntu 13.10

Question: How  to change  hostname in Ubuntu  13.x ? Answer: 1. First make a backup of the following files. cp /etc/hosts /etc/hosts.back cp /etc/hostname /etc/hostname.back 2. Edit the 'hosts' file: vi...

How To Install Openfiler In Virtualbox

Openfiler is a network storage operating system. With the features built into Openfiler, you can take advantage of file-based Network Attached Storage and block-based...