Tutorials/Tips

How to install Oracle JRE on Fedora 20 and use alternatives to switch between it and OpenJDK

How to install Oracle JRE on Fedora 20 and use alternatives to switch between it and OpenJDK

All the Java components installed on Fedora (20) are provided by OpenJDK (Open Java Development Kit), a Free Software implementation of Java SE (Standard Edition). It’s all you’ll need except when you have to install an application that requires Oracle JRE (Java Runtime Environment). One such application is the community edition of Datastax Cassandra, a NoSQL database. I thought I […]

September 19, 2014 · 0 comments · Tutorials/Tips
How to extend, grow or resize an LVM logical volume

How to extend, grow or resize an LVM logical volume

This short tutorial shows how to resize an LVM logical volume. WARNING: Do not reduce the size of an active logical volume. It is the easiest way to lose you data. Recovery is possible, but it can be an involved process. Use this just as a guide on how to grow an LVM logical volume. The screenshots you see in […]

September 6, 2014 · 0 comments · Tutorials/Tips
Upgrade Ubuntu 12.04 server to 14.04

Upgrade Ubuntu 12.04 server to 14.04

‘Tis the season for upgrading. First was upgrading OSSEC from 2.7 to 2.8, see Upgrading OSSEC 2.7 to 2.8 and the bro-ids rule issue. Now’s the time to upgrade the server that OSSEC was protecting. Before the upgrade, the server was running Ubuntu 12.04 LTS. It was upgraded to Ubuntu 14.04 LTS less than an hour ago. Here’s how I […]

August 22, 2014 · 0 comments · Tutorials/Tips, Ubuntu
Upgrading OSSEC 2.7 to 2.8 and the bro-ids rule issue

Upgrading OSSEC 2.7 to 2.8 and the bro-ids rule issue

‘Tis the season for upgrading. This hour, the target is OSSEC. Next will be a Cloud server running Ubuntu 12.04 LTS, which will be upgraded to Ubuntu 14.04 LTS OSSEC is a cross-platform and Free Software “host-based Intrusion Detection System that performs log analysis, file integrity checking, policy monitoring, rootkit detection, real-time alerting and active response.” It is one of […]

August 22, 2014 · 0 comments · Tutorials/Tips
ProtonMail and Subrosa: Encrypted communication for the privacy-conscious

ProtonMail and Subrosa: Encrypted communication for the privacy-conscious

ProtonMail and Subrosa are two separate communications services that’s attempting to offer users a platform for secure, encrypted communication. They are trying to offer what’s come to be known as zero knowledge (also zero access) Cloud data service, that is, the service provider cannot read your data. And at a time of all-out government snoopy, you cannot be too careful […]

How to use Deepin 2014 Guest account

How to use Deepin 2014 Guest account

Deepin 2014 ships with a guest user account, but you’ll need to enable it before you can use it. It took me a while before I figured out how to use it. This short tutorial shows how to enable and use it, if you are still trying to figure it out yourself. It’s a simple, 4-step process: 1. Log in […]

July 18, 2014 · 0 comments · Deepin, Tutorials/Tips