I decided to install Xubuntu 17.04 today, and if anyone here has an Acer ES1-531 computer (which is what I use), or similar modern Acer that uses UEFI and cannot get Linux to boot after restarting (and the installation process completing) follow these instructions:

1. Boot into BIOS. You may be prompted for a password, enter it.
2. Enable 'Secure Boot' in 'Boot' setting if it is not enabled already.
3. Go to 'Security' and click 'Select an UEFI file as trusted for executing'.
4. (In the case of Ubuntu+GRUB) find HDD0 > ubuntu > shimx64.efi
5. Name it something relevant such as 'Xubuntu'
6. Restart, saving changes, and boot back into BIOS
7. Push 'EFI File Boot 0' to the top of the listing in 'Boot' setting.
8. You should be able to boot into GRUB.

You can turn Secure Boot off again if you wish to after step 8. It does not remove the additional boot entry that you added.

It's a "NoSQL" key-value data store. More precisely, it is a data structure server. The closest analog is probably to think of Redis as Memcached, but with built-in persistence (snapshotting or journaling to disk) and more datatypes
Know more here :-
http://www.linuxtroubleshoot.com/index.php/2016/03/16/what-is-redis/

Cinnamon 2.6 has been officially released with many interesting changes and improvements. Cinnamon 2.6 will be used in Linux Mint 17.2 "Rafaela" that is planned to be released in end of June. In this article I'm going to review this release and tell you how you can install it on Ubuntu or derivatives. I hope you will like to use it. One more thing, when you use it please give your feedback.

What's New In Cinnamon 2.6 ?

To see all new features & changes made to this release. Read the original article here on LinuxAndUbuntu.com.


How To Install Cinnamon 2.6.x In Ubuntu 15.04 Vivid/14.10 Utopic/14.04 Trusty/other related derivatives ?
Warning: If you have installed any Linux Mint application, first of all remove that application(s) and PPA from your system. If you added Noobslab's Mint PPA first remove it with this command -
(sudo apt-get install ppa-purge && sudo ppa-purge ppa:noobslab/mint)


To install Cinnamon 2.6 in Ubuntu 15.04 Vivid/14.10 Utopic/14.04 Trusty/other related derivative systems, open Terminal (Press Ctrl+Alt+T) and use the following commands in the Terminal:



Since this is nightly PPA, after installation disable this PPA from your system.


To uninstall Cinnamon, enter these commands in Terminal:


For More Articles See LinuxAndUbuntu.com

Some Linux quizzes:

http://www.engless.com/tech/linux/linux.php

1. Starters (100 questions)
2. History (70 questions)
3. From the Shell (3 levels - 40, 40 and 50 questions)
4. Expert (2 levels - 50 and 25 questions)
5. Wifi (10 questions - new!)

A quick way to explore what's possible with Linux or test yourself.

Have fun.

(the From the Shell Quiz might be a bit tricky).

Setting up everything after upgrading or re-installing OS is very time consuming. We don't know what PPAs we had added into our system or what applications we had installed. Don't bother now because you don't need to remember them all. Aptik backups them all.

Aptik is a backup tool to backup and re-store all your favorite PPAs, Applications, Applications settings and yeah themes too. After saving backup restore it when you install new operating system.


Creating backup of PPAs, applications and applications settings does not take much time and its too small to upload it on cloud storage. Although If you have installed so many themes then themes and icons backup may time some 2-3 minutes.

How to install Aptik

• First of all add the repository into your sysem.
• Update your repositories
• Install Aptik

[/list]



How to backup Applications/PPAs/Themes and Icons/Applications settings using Aptik

Install/Upgrade Linux Kernel To 3.18.3 Stable In Ubuntu/Linux Mint/Peppermint

Recently Linus Torvalds announced Linux Kernel 3.18.3. The Kernel includes several bug fixes. Latest Linux Kernel includes new features, bug fixes and improve security. Updating/Upgrading Linux Kernel is recommended.

Read on LinuxAndUbuntu
What is Linux Kernel?


Those who don't know what is the Linux Kernel they should know it because Linux kernel is the essential part of any Linux operating system. It is responsible for resource allocation, low-level hardware interfaces, security, simple communications, basic file system management, and more. Written from scratch by Linus Torvalds (with help from various developers), Linux is a clone of the UNIX operating system. It is geared towards POSIX and Single UNIX Specification compliances.


Latest Stable Linux Kernel Version 3.18.3


The Linux Kernel 3.18.3 release has many changes. Check the complete changelog here.


Install Linux Kernel 3.18.3

Because it is not available via PPA, the needed deb packages of Kernel 3.18.1 are available via kernel.ubuntu.com. Follow the instructions for your system’s architecture exactly, in order to get a successful installation.


To install or update Latest Stable Kernel 3.18.1 on Ubuntu 15.04 vivid vervet, Ubuntu 14.10 Utopic Unicorn, Ubuntu 14.04 Trusty Tahr (LTS) , Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana, Pinguy OS 14.04, Elementary OS 0.3 Freya, Elementary OS 0.2 Luna, Peppermint Five, Deepin 2014, LXLE 14.04, Linux Lite 2.0, Linux Lite 2.2 and other Ubuntu derivative systems, open a new Terminal window and bash (get it?) in the following commands:

For 32-bit systems: Downlaod .deb files




Install the files now-



Atfer install complete, update grub and reboot your computer and choose new kernel in grub :



For Linux system 64 bit :



Install the files now-



Atfer install complete, update grub and reboot your computer and choose new kernel in grub :



How to UnInstall Linux Kernel 3.18.3



You've done it! Now you can check your Linux Kernel version after restarting system with the following command -



Also Read How To Install Software In Linux : An Introduction

How To Convert And Download Videos from YouTube, vimeo, Dailymotion Or from another sites By ClipGrab In Ubuntu/Mint

Here I’m with the very useful information for linux/Ubuntu Newbies. It is one of the very difficult tasks for newbies to download and convert videos from sites, like, Youtube, Vimeo, Dailymotion etc. But here is a very useful, easy and powerful application for Ubuntu/Linux Mint to make video downloading  super easy. ClipGrab.

Now you don’t need to search for online site/applications that require java etc. to work properly. ClipGrab is a free software to download and convert videos from different famous sites of Internet. You can easily save your favorite videos from sites like Dailymotion, Youtube or Vimeo. You can check complete list of supported websites by this software. And you can convert these videos into "usable" formats like WMV, MPEG or MP3. You can check here which sites are supported by this software. It can convert videos to WMV, MPEG4, OGG Theora, MP3 (audio only), OGG Vorbis http://clipgrab.org/faqs/supported-sites(audio only) or simply download videos in their original format. However, downloading from some websites doesn't allow you to select other format from drop-down menu, it could be issue with site videos.

Also read How to install VirtualBox through ppa in ubuntu 14.10/14.10 or other distributions

ClipGrab is capable to download from the following sites like,  Clipfish, Collegehumor, Dailymotion, MyVideo, MySpass, Sevenload, Tudou, Vimeo and others. ClipGrab is even capable to download videos that are not listed. And yeah! ClipGrab can also download HD videos from sites that have support for high definition.

Install ClipGrab

There is an official ppa available but It does not have packages for Ubuntu 15.04 (vivid vervet) and Ubuntu 14.10 (Utopic Unicorn). So for Vivid Vervet and Utopic Unicorn there is noobslab ppa available that has packages for all.


Official ppa for ClipGrab

Noobslab ppa


Yeah! You've done.Now start ClipGrab to enjoy downloading.

Want to know how to convert and download videos in ClipGrab? Just visit the original article

Recently I posted a video in our video tutorials page on "How To Install Genymotion And Run Android Apps (Whatsapp) On Ubuntu 14.10/Linux Mint Or Others Video Tutorial".  I was asked for simpler way of installing VirtualBox instead of downloading package from website and depackaging it through dpkg. So here you can also install it from ppa. Although you can directly open .deb file in software center that will install quickly but those who are familiar with repository then you can do it with adding ppa also.

VirtualBox is used to install another virtual operating system inside one operating system. If you want to know more about VirtualBox then read here.

Install VirtualBox using ppa

First of all install dependency for VirtualBox.

Add ppa

To add ppa and key use the following commands -

Add the public key to your repository that you just installed


For Ubuntu 14.04

For Ubuntu 13.10

For Ubuntu 13.04

For Ubuntu 12.10

For Ubuntu 12.04

For Ubuntu 11.10

For Ubuntu 11.04

Now its time to update  your repositories


Now Its Time To Install VirtualBox


If you want to install any other version then just replace 4.3 with whatever the version you want, like, 4.2 or 4.1

It's all done! You've installed VirtualBox open it from dash by typing 'virtualbox'.

Also read our important article How To Install Software In Linux : An Introduction

How To Use 'Sudo' And 'Su' Commands In Linux : An Introduction

Today We're going to discuss sudo and su, the very important and mostly used commands in Linux. It is very important for a Linux user to understand these two to increase security and prevent unexpected things that a user may have to go through. Firstly we will see what these commands do then we'll know the difference between both of them. So let's get started.

Introduction to Linux command 'sudo'

In Linux there is not root account configured by default. If users want root account password then they can manually set it up oo can use 'sudo'. As we all know, Linux in many ways protects users' computer being used for bad purposes by some nasty people around us. Using sudo is one of those good ways. Whenever a user tries to install, remove and change any piece of software, the user has to have the root privileges to perform such tasks. sudo, linux command is used to give such permissions to any particular command that a user wants to execute. sudo requires the user to enter user password to give system based permissions. For example user wants to update the operating system by passing command -


The above command will give following error-



This error is due to not having root privileges to the user 'sandy'. The root privileges can be required by passing sudo at the very beginning, like below-


The above command will execute command and the operating system will update-



As you can see when I used apt-get update that is a packaging management tool and through that I tried to update my system but it failed because to make this command work for me, I must have root privileges. So the next time I used the same command along with 'sudo' and this time sudo command asked user password to have root privileges to update system. After entering user password it system updated.

But there may not be all the user accounts able to use sudo. As a system administrator, he has to give the rights whether any particular user can sudoer to do particulars admin tasks. To read that in description jump over here on the official page.

Some more examples of 'sudo' -


 This command will install packages with the root privileges.


 This command will remove packages with the root privileges.


 This command will update packages with the root privileges.

Introduction to Linux command 'su'

The Linux command 'su' is used to switch from one account to another. User will be prompted for the password of the user switching to.


Users can also use it to switch to root account. If user ty
pes only 'su' without any option then It will be considered as root and user will be prompted to enter root user password.



Using 'su' command to have functionality similar to 'sudo'

If user only uses 'su' command and want to use 'su' as 'sudo' then it can be done. (here root password is assumed to have been configured because user is familiar with 'su'.)

To achieve same sudo functionality to execute any single command user has to use '-c' option of 'su'. Here is how to do it -


After hitting enter user will be prompted for password and obviously it's for root password because we're using 'su' command.

Using 'sudo' command to have functionality similar to 'su'

Above we have seen 'su' having similar functionality as sudo and it's time to see how we can do same with the command 'sudo' and achieve same 'su' functionality.

To achieve same 'su' functionality in 'sudo' just use '-i' option of 'sudo'. Here is how we can do it -



When user hits enter, it will ask password its the user password not the root password.

It's all done!

You can learn more about these commands through man pages.


Congratulation! You now have the basic knowledge the mostly used commands in Linux.

We'll learn more about these commands in our another post, like to create/configure root password manually etc.

Also read article APT Packaging Management Tool In Detail; Linux