Install Slingshot Launcher (Mac os Style) on Ubuntu/Linux Mint

Install Slingshot Launcher (Mac os Style) on Ubuntu 11.10 Oneiric (xfce, kubuntu,lmde)/11.04 Natty(xfce, kubuntu,lmde)/Linux Mint(xfce, kubuntu,lmde)

An Elementary OS launcher (slingshot) is application launcher like Mac OS application launcher which use in Elementary OS Distro (New Ubuntu Based Distro).
In the wake of the new Mac launcher, imitation apps are showing up for other operating systems to replicate the functionality of the Mac OS X Launchpad. One recent example for is JumpPad, which is mean to provide the Launchpad functionality in Windows. But if you would like to get this functionality in Ubuntu, then you can give Slingshot a try. It is a Launchpad style application launcher which can be be used with the Unity Launcher to quickly locate and run applications.

Note: for oneiric public key is not available but still you can install with warning.

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

Terminal Commands:
sudo add-apt-repository ppa:elementaryart/elementary-dev
sudo apt-get update
sudo apt-get install slingshot-launcher

Now Enter following command to edit config file:

Terminal Command:
sudo gedit /usr/share/applications/slingshot.desktop

Change the following values in Text File:

 [Desktop Entry]
 Version=1.0
 Type=Application
 Terminal=false
 Exec=slingshot
 Name=Slingshot
 Icon=/usr/share/icons/logo-black.svg

Now go to dash and Search for "Slingshot".
Here is SlingShot on LaunchPad. That's it