How to use yum to install a specific version of a Package?
If you ever want to instruct YUM to install only a particular version of a package, then here’s how you...
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How to Create Kali Linux Image in QCOW2 format for OpenStack?
If you ever wanted to try Kali Linux in OpenStack, then you have landed on the right page. In this...How to Extract 7z package in CentOS/RHEL/Fedora?
Are you stuck in extracting .7z file in Linux? Then here’s how you can install 7z extractor in CentOS, RHEL...Failed to start PostgreSQL database server – Unregistered Authentication Agent for unix-process [Solved]
Question: I got an error ‘Failed to start PostgreSQL database server – Unregistered Authentication Agent for unix-process‘ while starting PostgreSQL...How to Fix Metasploit error – requires the bundler gem to be installed? [Solved]
Question: I was stuck with an error “Metasploit requires the bundler gem to be installed” while executing msfconsole from the...How to Fix Ruby Installation error: EC_GROUP_new_curve_GF2m undeclared (first use in this function)?
Question: I was compiling Ruby version 1.9.3 on a CentOS machine and landed up with the below error message while...How to create a mailing list in thunderbird and send email to the list of email addresses
I recently wanted to create a mailing list in Thunderbird and send out a confirmation email for 40 odd participants registered for...How to find the filesystem of CD/DVD to make it mount automatically : [Linux]
Question: I recently burnt a DVD and was trying to mount it on my Ubuntu box. It worked, when I...Understanding Puppet Resources, Manifests, Modules and Classes with Examples
In this tutorial, I’ll be explaining about Puppet resources, manifests, modules and classes with examples. Also, I assume that you...How to enable LocalStorage support in Google Chrome browser
When I was stumbling upon to implement Single Sign-On in one of my web-project, came across a solution implemented by...How to Install and Configure Puppet 4 on CentOS and Ubuntu? [Master and Agent]
Puppet, a popularly known configuration management tool for Unix and Windows based systems that allows an administrator to easily automate...You can now use Prisma on Desktop with the help of Telegram and its PrismaBot
Everyone is busy applying filters to their photos using the Prisma app which uploads the photo to the server, applies...How to use Auditing System in Linux – Configure, Audit Logs and Generate Reports
Before we start discussing about the Auditing system, I would like to ask few questions. How do you monitor the commands...How to block access to Facebook and Twitter on your Windows PC using hosts file
Recently my son started to spend more time on Facebook. How much ever I tell him, he still uses it whenever...Make use of CSS writing-mode for creating easy vertical texts in webpages
While creating web pages, everyone of us might have come across vertical text. Although it gives a bit of reading...How to run batch file from shared network?
Web development is challenging when you have to make your webpage to look good on all browsers. The IE9 browser is...Migrated from http to https? You need to replace image links in WordPress database to avoid mixed content errors
If you have migrated your website from HTTP to HTTPS, then you must be prepared to face few hiccups. One...Here’s everything you can do with Nmap – Command Examples
Nmap is an open source network mapper that allows one to scan network of hosts, services, perform security assessment and...How to Fix – Sudo unable to resolve host in Ubuntu?
If you getting an error “Sudo unable to resolve host” while executing sudo command in Ubuntu, then here’s how you can...