On the last post described to install mongoDB 3.0.X version, the following steps are install 3.2.6 with easy way,

First need to import the public key,

#  sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv EA312927 

Create a list file for MongoDB.

# echo "deb http://repo.mongodb.org/apt/ubuntu trusty/mongodb-org/3.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-3.2.list

Now, update the resources using below command

# sudo apt-get update

By default the repo. get to install the latest stable version of MongoDB.

# sudo apt-get install -y mongodb-org 

If you want to install specific version like mongodb-org=3.2.6 perform the command.

# sudo apt-get install -y mongodb-org=3.2.6 mongodb-org-server=3.2.6 mongodb-org-shell=3.2.6 mongodb-org-mongos=3.2.6 mongodb-org-tools=3.2.6

To start the MongoDB service

# sudo service mongod start

To stop the MongoDB service

# sudo service mongod stop 

To restart the MongoDB service

# sudo service mongod restart 

To status the MongoDB service

# sudo service mongod status

Remove Packages.

It's very simple to remove MongoDB server,

# sudo apt-get purge mongodb-org*

Also, want remove Data Directories and logs

# sudo rm -r /var/log/mongodb

# sudo rm -r /var/lib/mongodb