How to lock unable to lock database error in Arch Linux

If pacman intrupted the  /var/lib/pacman/db.lck error occured more as follows...

  error: failed to init transaction (unable to lock database)
if you're sure a package manager is not already
running, you can remove /var/lib/pacman/db.lck

Any one can correct it with rm command with sudo as following...

 sudo rm /var/lib/pacman/db.lck

and type your password
That's it

How to solve wifi is not working in Ubuntu 13.10 and older versions and derivatives eg LinuxMint

This problem happens to due to either your systems hard switch off or soft blocked
If hard switch is off turn it on and check the wifi connection is now working if not, open the Terminal by pressing keys Alt+Ctrl+T and type or copy and paste the following command in the Terminal:

sudo rfkill list all

It list all your system supporting features eg. Bluetooth, wifi as following screenshot

In above screenshot bluetooth is soft blocked so it can turned on by doing following:
Now copy and paste following command in the terminal:

sudo rfkill unblock bluetooth

or all features can turned on by one command as follows:

sudo rfkill unblock all

Now check again if all soft blocked Bluetooth, wifi etc turn on or not by copy and paste following command in the terminal:

sudo rfkill list all

Now you can surely connect to your wifi network or bluetooth devices.

How to install Unity8 in Ubuntu 13.10

Unity8 Ubuntu's much awaited next gen desktop shell which will replace current unity7 and work seamless on all type of devices from mobile phone to tablet to desktop pc or laptop etc.

Unity8 is not ready yet to install and run as a default desktop in Ubuntu 13.10 but you can install and test it as a app and you can change the size of unity8 as per screen size from mobile device screen to tablet to desktop..

To install unity 8 in ubuntu 13.10 copy and paste following in the terminal and hit the enter

sudo apt-get install unity8 unity8-fake-env unity8-private

After installation to run unity 8 on the desktop you have to open the terminal and copy and paste the following and press enter (For first time only)

export UBUNTU_ICON_THEME=ubuntu-mobile

Then finally run unity8 by typing the following in the terminal and hit enter:
(Now on only following command required each time when you want to run unity8 on your ubuntu 13.10 desktop)

unity8 -mousetouch  

It will run the unity8 on your desktop.

Below is the screenshot tour of unity8
Unity8 home screen:

Unity8 application screen:

Unity8 Music screen in full desktop screen size mode:

Unity8 Files & Folders:

Unity8 Social:

Some more screenshots:

Error E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

Sometimes when we use the Terminal following error appears and commands not work:

Error-  E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

How to fix it:

Option 1: restart your system. ---It is too longway

Option 2: open the terminal and copy-paste following and hit enter

sudo rm /var/lib/apt/lists/lock

That's it now it is fixed the error and you can use the terminal.

Dropbox--Multi platform sync tool and its free

Dropbox

It is free and multi platform sync tool, so you can sync your important photos, files or folders all across your any device
Install it in to Ubuntu13.10 /13.04, debian, Manjaro etc and login with your id and password and it start works.


Download link:
https://www.dropbox.com/install?os=lnx

TIPPO10 -Free 10 finger touch typing tutor

TIPPO10
It is very useful software for learning the 10 finger typing both touch and type
You can use it online via your browser(Google chrome) or can install on any platform like:
Linux--Ubuntu, LinuxMint, Arch, Manjaro, Fedora etc
Windows
Mac

Download link:
http://www.tipp10.com/en/download/

Ubuntu13.10 download links

Ubuntu13.10 is released with all its flavours on 17th October

Download Ubuntu 13.10 Xubuntu13.10 Kubuntu13.10 from here:

Desktop(Torrent Download)
PC 32bit     http://ubuntu.ipacct.com/releases//saucy/ubuntu-13.10-desktop-i386.iso
PC 64 bit    http://ubuntu.ipacct.com/releases//saucy/ubuntu-13.10-desktop-amd64.iso

Xubuntu(Torrent download)
PC 32 bit  xubuntu32bit
PC 64 bit  xubuntu13.10-64bit

Kubuntu(Torrent download)
PC 32 bit  http://cdimages.ubuntu.com/kubuntu/releases/13.10/release/kubuntu-13.10-desktop-i386.iso
PC 64 bit  http://cdimages.ubuntu.com/kubuntu/releases/13.10/release/kubuntu-13.10-desktop-amd64.iso

Ubuntu Gnome (torrent download)
PC 32bit  ubuntu-gnome13.10-32bit
PC 64bit  ubuntu-gnome13.10-64bit

Please read our previous post for  -TOP THINGS TO DO AFTER INSTALLING UBUNTU 13.10
Below is the link
http://snlinuxtips.blogspot.in/2013/10/top-things-to-do-after-installation.html