Rebuild Launchpad in Yosemite

I look up and down for how to rebuild Yosemite launchpad database. And finally found the way and successfully rebuild it.

To cut long story short, just follow the steps below it will just rebuild it. Until someone comes out with a program to simplify the process, we have to use terminal to do it.

Step 1

Open Terminal (from application or spotlight search)

Step 2

Type the below or copy paste line by line in terminal

rm ~/Library/Application\ Support/Dock/*.db
rm "/$TMPDIR../0/com.apple.dock.launchpad/db/db*"
defaults write com.apple.dock ResetLaunchPad -bool true; killall Dock

Check launchpad and the apps in application folder should appear in the launchpad.

Mavericks calculator app

For those who finds Yosemite calculator app uncomfortable, you can actually runs calculator app from Mavericks version on Yosemite. 

You can the download MacOS Mavericks version of calculator from here.