The Linux kernel is the operating system kernel used by the Linux family of Unix-like operating systems . It is one of the most prominent examples of free and open source software. Ubuntu is a computer operating system based on the Linux distribution and distributed as free and open source software, using its own desktop environment.

Why upgrade the kernel?

There are several reasons to upgrade the kernel. One is to take advantage of a specific new feature or driver; another is to be protected against a security vulnerability, or just to maintain an up-to-date and healthy system. So, from time to time it may be wise to upgrade your Linux kernel. Even if you choose not to update to every new kernel revision, it is recommended that you at least upgrade from time to time. It is strongly recommended that you immediately upgrade to a new kernel if that new release solves a security problem.

Root user is the master of whole computer – it is the main administrator of the system. With last some Ubuntu releases, Ubuntu team have hidden root user and removed the support to login into root user. If you’re using Linux distros from long time, then you must be familiar with this change. Do you miss Root user account? Do you enjoy using your system in Root mode? Do you get frustrated by password-asking dialogs? If Yes, then this tutorial is especially for you. You can enjoy using your system with full administrative rights and without getting any password dialogs for any program/software by following this easy tutorial. It’s easy to follow and enjoy.

Ubuntu team developed live file-system which can be booted on system without installing the operating system on hard disk (even with persistent storage which allow you to save changes on pen drive). Most of the Linux systems incorporated this technology in their distributions which allowed people to run Linux distros on CD/DVD or pen/flash drive prior installing it on their systems. By live-booting, you can check that your system is supported by the Linux distribution and take a test drive of the operating system. BUT, how you’re going to run your favorite Linux from pen drive? So, I’m going to tell you the procedure to Boot and Run Linux from pen drive using UNetbootin.

Mozilla Sunbird is a cross-platform calendar application built using Mozilla toolkit. Sunbird can be used as a stand-alone Calendar application to create tasks and set alarms for them. You can have your digital time-table (basic, school, college or office schedules) on your system using Sunbird. Though, it’s developed no more but it has all the features that you’ll be looking in your calendar program like support for Google Calendar through extension, International time zones, calendar views (day, week, multiweek, month), multiple alarms for one task, auto-repetitive tasks, multiple calendars, etc. So, let’s see how to make it work for you.