Frequently Asked Questions

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 ...

Question : How to install Firefox4 in Debian Squeeze? Answer: Firefox is not  the defaut borwser in Debian, in this post we will try to...

By default, Google Chrome displays PDF files in the browser while trying to download them by clicking on their links. Which downloads and opens...

Question   How to avoid using sudo when working in /var/www?       Answer  : Add  the  user  to the www-data group and set the setgid bit on the /var/www...

Question: How  to  upgrade to  The  latest  Salckware  release? Answer: First as root, open /etc/slackpkg/mirrors. Uncomment one mirror if you haven't already. Change the directory it...

Today, we will learn how we can install OpenCart on our CentOS 7 Linux distribution. Why CentOS? CentOS Linux is a community-supported distribution derived from sources freely...

I am sure most of you use many YUM repositories to install software on any RPM based distributions like RHEL, CentOS, Fedora etc. Sometimes,...

A password(commonly knows as passwd in linux) is an unspaced sequence of characters used to determine that a computer user requesting access to a...

SQUID Proxy Server A proxy server is a device that usually sits between a client and the destination the user is trying to reach. It...

Jenkins is a self-contained Java-based program, ready to run out-of-the-box, with packages for Windows, Mac OS X and other Unix-like operating systems. MASTER SLAVE ENVIRONMENT...

The kernel is the core of the operating system, and runs the CPU, manages system memory, controls access to disk drives, and contains device...

File systems control where and how your data is stored and retrieved from a storage device. Windows and macOS users have little reason to...

The bash shell incorporates some of the best features of the C and Korn shells, such as job control, directory manipulation, and aliases.  Aliases are...

KeePassX keepassx is a password manager to allow users to keep the passwords safe by using the encryption alogorithms either AES (alias Rijndael) or Twofish...

Introduction Linear programming is a method for determining the best solution to a linear function. Making a few simple assumptions is the best technique for...

Providing fast, well-performing websites is absolutely essential these days. A slow website means visitors will drop off sooner and leave, missing opportunities and leaving...

If you're using a Linux machine, you will be dealing with executable files constantly – be it on the GUI or on your terminal....

Every tech enthusiast knows that Linux comes with the freedom that hardly any other OS can offer. We don’t even have to get into...