How To Remove Envelope Icon From Top Panel Ubuntu 12.04

If you don't like to use the envelope ( like myself)  just remove it from the panel. Code:

sudo apt-get purge indicator-message

or just open the Ubuntu Software Center and search for "indicator-messages" then uninstall.
But i prefer the apt-get.

Ubuntu 12.04 Black Screen After Logout

There were lots of suggestions and answers I found regarding this matter but the one that worked on my end was a very simple one. It was all about the screen display resolution. My laptop has a standard 1366 x 768 (16:9) resolution. For some reason this was changed to 1360 x 768. 
The change is very minor but this, in fact, was the cause on why I get a black/blank screen when I logout. After restoring to the original resolution, everything is now back to normal and working as it should be.

Go To  System Setting 

Choose Display

ok.

Change The Purple Background (Splash Screen) Ubuntu 12.04

In this tutorial we will see how to change the background image (splash screen) of the GRUB boot loader under Ubuntu 11.10/12.04 or older.

When you start your system, a boot menu will show up containing an ordered list of operating systems and kernels. This boot menu is black by default and can be customized as follows:

Start the Ubuntu terminal and install first the grub2-splashimages package with this command:

sudo apt-get install grub2-splashimages

GRUB spalsh images are stored in the /usr/share/images/grub folder, you can access it with this command:

sudo nautilus /usr/share/images/grub

If you want to use a custom image, make sure it is in the TGA format, then place it in that folder. After deciding which image to use as splash screen for the GRUB2 boot loader, edit now the /etc/default/grub file with this command:

sudo gedit /etc/default/grub

At the end of the file, add this line:

GRUB_BACKGROUND=/usr/share/images/grub/YOUR-IMAGE.tga

Replace YOUR-IMAGE.tga with your custom image name.

When you finish, press CTRL+Q and save your file. Run now this command:

sudo update-grub

Restart now your computer to see if changes are successful (hold down the SHIFT key to bring up the GRUB boot screen while rebooting).                                                                                                                              Source 

OR

The Best And Easy Way....

Install Grub Customizer, every settings are under Preferences.
 

Grub Customizer (2.5.7) Installation

For Ubuntu 12.04/Linux Mint 13, you can easily install Grub Customizer with the following commands:

sudo add-apt-repository ppa:danielrichter2007/grub-customizer

sudo apt-get update

sudo apt-get install grub-customizer

For openSUSE 12.1 or older, run the following commands:

(openSUSE 32-bit)

wget -O grub-customizer-2.5.7-i686.rpm http://goo.gl/vE2Ev

su

zypper in grub-customizer-2.5.7-i686.rp

(openSUSE 64-bit)

wget -O grub-customizer-2.5.7-x86_64.rpm http://goo.gl/1GL6

su

zypper in grub-customizer-2.5.7-x86_64.rpm

For Fedora 17 or older, you can install with these commands:

(Fedora 32-bit)

wget -O grub-customizer-2.5.7-i686.rpm http://goo.gl/vE2Ev

sudo yum install grub-customizer-2.5.7-i686.rpm

 (Fedora 64-bit)

wget -O grub-customizer-2.5.7-x86_64.rpm http://goo.gl/1GL6B

sudo yum install grub-customizer-2.5.7-x86_64.rpm

That's it!                                                                                                                                 source

HTTrack 3.46-1 Website Copier Released - PPA Installation For Ubuntu 12.04/Linux Mint 13

HTTrack is a web-based program that allows users to copy any website to your local hard drive for offline browsing. Nothing complicated with this website copier due to its plain web interface, you insert some few details about the website to download and let HTTrack do the rest, which will copy every page on the website, images, backgrounds, and every file hosted on that server with support of resuming interrupted downloads or updating existing mirrored websites.

The latest version of HTTrack is 3.46-1 which hasn't yet landed in the official Ubuntu repository (only for Quantal currently), but you can install it from our custom PPA as described below for Ubuntu 12.04/11.10/11.04. This version brings better unicode filenames handling and many bug fixes.

HTTrack 3.46-1 Installation

To install HTTrack 3.46-1 in Ubuntu 12.04 or Linux Mint 13 (Maya), open the terminal and run these commands:

sudo add-apt-repository ppa:upubuntu-com/web
sudo apt-get update
sudo apt-get install webhttrack httrack

You can either start HTTrack via the Unity Dash, or open directly this URL:

http://upubuntu:8081/server/index.html

To browse copied websites, you can check them in the "websites" directory located on your home. For CLI (Command-line interface) mode, you can run this command from the terminal and follow given instructions:

httrack

HTTrack Home Page 

source : http://www.upubuntu.com/

 

Disable Apport Error Report Dialog in Ubuntu 12.04

In fresh Ubuntu 12.04 installation, it keeps popping up annoying apport error report dialog on every log-in even after sending the error report. This simple tutorial will show you how to disable this dialog in Ubuntu.

Open up terminal from the dash home or press Ctrl+Alt+T, edit “/etc/default/apport” file with this command: 

sudo gedit /etc/default/apport
Set enable=0:
enable=0

Save the file, and done!

What is the HUD?

The HUD or Heads Up Display is a search-based alternative to traditional menus and is a brand new feature in Ubuntu 12.04.

Some apps like Gimp or Inkscape have hundreds of menu items. If you're using apps like these, you may remember the name of a menu option, but you might not remember how to find it in the menus.

Using a search box can be quite a bit easier and even faster than navigating complicated heirarchies of menus. The HUD also can be more accessible than normal menus as some people are unable to precisely control a mouse pointer.

It's easy to try the HUD:

1. Tap Alt to open the HUD.
2. Start typing.
3. When you see a result that you want to run, use the up and down keys to select the result, then press Enter, or just click your desired search result.
4. If you change your mind and want to exit the HUD, simply type Alt again or Esc. You can also click anywhere outside the HUD to close the HUD.

The HUD keeps track of your search history and adjusts the search results to be even more useful the more you use it.

source

Reduce Application Icon Size Of Gnome Shell

Open Terminal & type

sudo gedit /usr/share/gnome-shell/theme/gnome-shell.css

 
search for:

/* Application Launchers and Grid */ 

You'll see this:

/* Application Launchers and Grid */

.icon-grid {
    spacing: 36px;
    -shell-grid-horizontal-item-size: 118px;
    -shell-grid-vertical-item-size: 118px;
}

.icon-grid .overview-icon {
    icon-size: 96px;
}

Edit the icon-size: 96px to whatever size you like.
Save and
press Alt + F2 button  then type r
or logout and login again to refresh the shell themes.

Enjoy.

Install Latest Chromium Browser 21 in Ubuntu 12.04 and Linux Mint

Chromium web browser, the open source version of Google Chrome has reached version 21. The Chromium daily build ppa has stopped updating the packages after version 18 was released. Tobias Wolf created a new ppa (for now) providing latest Chromium package for Ubuntu 12.04 Precise.
How to install the latest Chromium 21 in Ubuntu 12.04:
Open terminal from the dash home or press Ctrl+Alt+T, execute this command to add ppa:chromium-daily/ppa:

sudo add-apt-repository ppa:towolf/crack

Update source:

sudo apt-get update 

sudo apt-get install chromium-browser

If you have an old chromium installed, run this instead:

sudo apt-get upgrade

6/24/2012 Revolutionary Clock: A Cool Desktop Widget You Have To Try On Ubuntu 12.04/Linux Mint 13 (Maya)

Revolutionary Clock is a conky widget that displays on your desktop various clocks in different sizes to show date, CPU & RAM usage. In this tutorial, we will help you install it under Ubuntu 12.04/11.10 or Linux Mint 13. Here is a screenshot of Revolutionary Clock under Ubuntu:

Revolutionary Clock Installation

To make the installation easier, I have uploaded the script files to our custom PPA. To install Revolutionary Clock on Ubuntu 12.04/11.10 or Linux Mint 13, open the terminal and issue these commands:

sudo add-apt-repository ppa:upubuntu-com/conky
sudo apt-get update
sudo apt-get install revolutionary-clock

You can now start Revolutionary Clock via the Unity dash:

For Linux Mint 13, search it in the Start menu:

 Here is a screenshot of Revolutionary Clock under LinuxMint 13 (Maya):

 To force kill all clocks, run this command:

killall conky

To install this script manually so that you start only certain clocks, you can refer to this page.

Enjoy!

Install GnomishDark theme on Ubuntu 12.04/11.10/Linux Mint 13/12 (GTK3 + Gnome Shell)

This is a clean dark theme for GTK3, based on Adwaita (provided by gnome-themes-standard), plus a matching GNOME-Shell theme. This theme works with Gnome shell, Gtk3.

1st Install nouveGnome Gray Icons then install theme.

To install GnomishDark theme on Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

• mkdir ~/.themes
• wget -O GnomishDark.zip http://dl.dropbox.com/u/53319850/NoobsLab.com/GnomishDark.zip
• unzip GnomishDark.zip -d ~/.themes && sudo rm GnomishDark.zip

That's it, Enjoy

An Amazing Wood Theme For Gnome Desktops - Ubuntu 12.04/11.10

If you are attracted to brown themes, you can really enjoy this wood theme that is available for Gnome desktops. In this tutorial, we will help you install it under Ubuntu 12.04/11.10. Here is a screenshot of this wood theme under Ubuntu 12.04:

Installation

Start the terminal and run these commands:

sudo add-apt-repository ppa:upubuntu-com/themes
sudo apt-get update
sudo apt-get install wood-theme

To enable it, run these commands:

gsettings set org.gnome.desktop.interface gtk-theme 'wood-theme'

gconftool-2 --set --type string /apps/metacity/general/theme 'wood-theme'

Install apt-fast Download Accelerator in Ubuntu 12.04/11.10/10.04

apt-get command is a normal way to download and install packages and update system. apt-fast is a shellscript wrapper for apt-get that can drastically improve apt download times by downloading packages in parallel, with multiple connections per package. It uses axel or aria2c as a download manager.

Once you’ve setup apt-fast, you can use it like apt-get. To install a single package, make sure your database is up to date (apt-fast update), and run apt-fast install packagenamehere. Watch it download with incredible speed, and install your requested packages. To upgrade or dist-upgrade, do the same thing. Just use apt-fast dist-upgrade or apt-fast upgrade.

Install and set up apt-fast in Ubuntu:
apt-fast got an official PPA provides packages for Ubuntu 12.04, 11.10, 11.04, and 10.04. You can use a graphical way installing apt-fast from ppa:apt-fast/stable

Or, open up a terminal (Ctrl+Alt+T) window and just execute following commands:

sudo add-apt-repository ppa:apt-fast/stable
sudo apt-get update
sudo apt-get install apt-fast axel

After installation, configure apt-fast to use axel as download manager:

• edit the configuration file:

  sudo gedit /etc/apt-fast.conf

• remove # before following “_DOWNLOADER” line and save the file
  

  # axel:
  _DOWNLOADER=’cat /tmp/apt-fast.list | xargs -l1 axel -n ${_MAXNUM} -a’ # axel

Now, run this command and then you can use apt-fast as apt-get

sudo apt-fast update

How To Increase Your Internet Connection Speed in Linux

Open a terminal in Linux you can use the combo keys ( Ctrl )+( Alt )+( T )
Open a terminal for wireless enter iwconfig then hit enter. For wired eithernet enter ifconfig & hit enter.
This should display the hardware & location of = 
EX =

CODE: SELECT ALL

mi@Mint8-KDEX64 ~ $ iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

eth2      IEEE 802.11  Nickname:""
          Access Point: Not-Associated
          Link Quality:5  Signal level:207  Noise level:166
          Rx invalid nwid:0  invalid crypt:0  invalid misc:0

mi@Mint8-KDEX64 ~ $

So here you can see that my wireless adaptor is located @ ( eth2 )
YOURS MAY BE DIFFERENT SUCH AS Wlan0 OR WLAN1, note the location, keep the terminal open.
Then were going to Navigate Open the file as root user with your text editor(gedit,kate,leafpad,Ect. whatever your text editor may be for the relevant desktop version you are using ),The text file we are Going to open is /etc/rc.local
In the open terminal input, or copy & paste this code:


For Gnome
CODE: SELECT ALL

sudo gedit /etc/rc.local

For KDE
CODE: SELECT ALL

sudo kate /etc/rc.local

For LXDE
CODE: SELECT ALL

sudo leafpad /etc/rc.local

Enter your password.(The cursor will not show you entering your password.) This should open the rc.local file as root in the text editor.
Add this exactly. to the end of the list replacing ( wlan0 ) with whatever is in your connection readout previously in the terminal you opened.

CODE: SELECT ALL

iwconfig wlan0 rate 54M

At The End your text file should look like this =





# By default this script does nothing.
iwconfig wlan0 rate 54M
exit 0


Now save the file ( from the text editor drop down menu ) & close the Text editor. Now Close the Terminal.
By adding this to the end of the rc.local file, every time your computer connects to the Internet,It looks for the maximum speed that your connection offers.
Now You Must Reboot your Computer.
This works on all four of my systems I have modified, so far giving me the same speed that I get in Win.
I hope this works as well for you, Comments & suggestions are welcome, Have a Good Day,


Thanks to Jay514 LinuxMint Forum

Install SunFlower 0.1a.42 Twin-Panel File Manager in Ubuntu 12.10/12.04/11.10/Linux Mint 13/12

Sunflower is Open Source, twin panel, small and highly customizable File Manager for Linux with plugins support. Sunflower main purpose is to create powerful and easy use of file manager. Sunflower is developed in python language.

To install SunFlower in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

• sudo add-apt-repository ppa:atareao/sunflower
• sudo apt-get update
• sudo apt-get install sunflower

How to Make Firefox Faster on Linux Mint

Before making any changes, please make a backup of .mozilla/firefox/--------.default/prefs.js for your own safety. prefs.js is a file that stores all of your history and bookmarks from Firefox. 

•  First open Firefox. 

• Type "about:config" (without quotes) in the Firefox address bar and then click "Enter". This command opens a configuration page that allows the user to change advanced system settings in Firefox.

• Speed up page loading/rendering time in Firefox. Right-click anywhere in the "about:config" window, click on "New" and then select "String". Name the string "nglayout.initialpaint.delay" (without quotes). Enter a value of "0" and then click "OK". This tweak decreases the amount of time Firefox waits to render a page from 250 milliseconds to zero. Make the same process and name the string "content.notify.interval" and enter a value of "0".

• Force Firefox to release reserved system RAM when the browser is minimized. Right-click anywhere in the "about:config" window, click on "New" and then select "Boolean". Name the entry "config.trim_on_minimize" (without quotes). Change the value to "True" and then click "OK". This setting forces Firefox to only reserve about 10 MB of system memory while minimized.

• Normally Firefox only sends one or two tunnels to the website. However, the more tunnels you use the faster you go. To change this, type in filter bar "network.http.pipelining.maxrequests" and change the value to "150".

• Attention: The more tunnels you use, the more bandwidth you use, meaning you could use as tunnels as you want but that would probably kill the sites bandwidth if everyone did that. 150 is a very good value.

• Type "network.http.pipelining" in filter bar, and set it to "True" by double clicking it.

• Type "network.http.proxy.pipelining" in filter bar, and set it to "True" by double clicking it.

Monitor System Resources in Ubuntu 12.04 LTS

This tutorial shows how to monitor your Ubuntu system resources such as usage of processor, memory, network, hard disk and also cpu/motherboard temperature, cpu fan speed.
There’s a good system load indicator for Ubuntu monitoring cpu usage, cache, memory, network, etc. And psensor is a gtk+ application monitoring temperatures and fan speeds.

1. Install system load indicator

Open up a terminal (Ctrl+Alt+T) and install it from ppa:indicator-multiload/stable-daily. You can use graphical way adding ppa

sudo add-apt-repository ppa:indicator-multiload/stable-daily
sudo apt-get update
sudo apt-get install indicator-multiload

 
2. Install psensor to monitor temperatures and fan speeds

First install lm-sensor, and start detect hardware sensors:

sudo apt-get install lm-sensors sudo sensors-detect

Install Psensor from this ppa:jfi/ppa

sudo apt-add-repository ppa:jfi/ppa
sudo apt-get update
sudo apt-get install psensor

 
3. Launch startup applications from the dash, add the two indicator as auto-start at login.
in command area:

• system load monitor use indicator-multiload
• psensor use psensor

BackBox Linux for Debian/Ubuntu

Ubuntu Natty 

You can update your system by adding ppa:backbox/two to your system's software sources.

Step 1 - Open a terminal and enter: 

 sudo add-apt-repository ppa:backbox/two 

Your system will now fetch the PPA's key. This enables your Ubuntu system to verify that the packages in the PPA have not been interfered with since they were built. 

Step 2 - Now, as a one-off, you should tell your system to pull down the latest list of software from each archive it knows about, including the PPA you just added: 

 

sudo apt-get update

Now you're ready to start installing software!

  

Other systems 

This PPA also can be added to your system manually by copying the lines below and adding them to your system's software sources.

deb http://ppa.launchpad.net/backbox/two/ubuntu natty main

deb-src http://ppa.launchpad.net/backbox/two/ubuntu natty main

Step 1 - Open a terminal and type: 

sudo nano /etc/apt/sources.list

This will open a text editor containing the list of archives that your system is currently using. Scroll to the bottom of the file and paste the lines you copied in the step above. Save the file and exit the text editor. 

Step 2 - Now you need to add that key to your system so Ubuntu can verify the packages from the PPA. In your terminal, enter: 

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 78A7ABE1

This will now pull down the PPA's key and add it to your system. 

Step 3 - Now, as a one-off, you should tell your system to pull down the latest list of software from each archive it knows about, including the PPA you just added:

sudo apt-get update

Now you're ready to start installing software!

 

Speed up your Ubuntu 12.04 with preload

Preload is nice little application that could make your linux system a lot faster. Preload is an adaptive readahead daemon. It monitors applications that users run, and by analyzing this data, predicts what applications users might run, and fetches those binaries and their dependencies into memory for faster startup times.

Preload packages are available for almost all linux distributions. And it is available by default in the Synaptic Package Manager and Ubuntu Software Center in Ubuntu. Alternatively, you can install it via Terminal. Type this command

 sudo apt-get install preload

Thats it. Preload will run silently in the background. If you want to further tweak Preload, conf file is available at /etc/preload.conf.

Note that installing preload will not make your system boot faster and that preload is a daemon that runs with root priviledges.

And see the difference.

BackBox Linux

BackBox is a Linux distribution based on Ubuntu. It has been developed to perform penetration tests and security assessments. Designed to be fast, easy to use and provide a minimal yet complete desktop environment, thanks to its own software repositories, always being updated to the latest stable version of the most used and best known ethical hacking tools.

Download