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A privilege escalation vulnerability being branded as “Dirty Cow” (CVE-2016-5195) was recently discovered and fixed yesterday in the Linux Kernel. It has existed for 11 years, so pretty much every device running Linux is affected (this includes VMs, physical machines, mobile… Continue Reading →

DDoS attack on Dyn took down major sites

A massive DDoS (distributed denial-of-service) attack against a popular cloud-based DNS provider Dyn.COM took down major websites. The DYN.COM confirmed it on twitter:   Follow Dyn ✔@Dyn We are aware of the ongoing service interruption of our Managed DNS network…. Continue Reading →

MySQL Server Variables

MySQL Server has tons of variables which may be adjusted to change behavior or for performance purposes. They are documented in the manual as well as on new page Jay has created. Still I see constant confusion out where which… Continue Reading →

Phishing scams

What is phishing?   Updated August 09, 2016. Phishing is a scam in which the attacker sends an email purporting to be from a valid financial or eCommerce provider. The email often uses fear tactics in an effort to entice… Continue Reading →

VMware Sells Its Government Cloud Business to QTS

VMware has agreed to sell its government cloud business to QTS Realty Trust, one of the biggest data center service providers in the US. The deal comes about a month after VMware, now majority-owned by Dell, announced a major shift in… Continue Reading →

Mbox vs Maildir: Mail Storage Formats

The Unix world has two ways of storing mail messages, the traditional mbox format and the newer maildir format. Postfix and Dovecot supports the two mail storage format so you can use any format, but I highly recommend you use… Continue Reading →

Show Storage Luns Allocated on Linux

Hope this output helps you to trace something that you are looking for. I have pasted some of the Storage LUNs related to the output from my RHEL 5 Server. Below scsi file shows all the visible LUNs that are… Continue Reading →

Command Line Arguments In Shell Script

In a shell script, you can pass variables as arguments by entering arguments after the script name, for e.g. ./ arg1 arg2. The shell automatically assigns each argument name to a variable. – Arguments are set of characters between spaces… Continue Reading →

How to Install Elgg with Nginx on Ubuntu 18.04

In this tutorial, we will show you how to install Elgg on an Ubuntu 18.04 VPS with the Nginx web server. Elgg is an open-source social networking platform where users are able to build all kinds of social environments, such as a campus-wide social… Continue Reading →

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