My 'UBUNTU 14.04' takes too much time after first boot. Well genius people will have many tricks and tweaks to speed up their systems but as a beginner  I am researching in the internet about following things which can possibly boost up performance of Ubuntu:
  1. Packages / Software installed in my #Ubuntu.
  2. Distinguishing useful / obsolete software.
  3. Removing unnecessary software, Releasing space, which can increase the speed.
This could be one way of solving the problem of slow performance of speed.

Today I will show  some ways to see the packages  and software installed in Ubuntu.

  1. Synaptic Package Manager

To open the Synaptic Package Manager in terminal type:

[email protected]:~$ sudo synaptic

This will open the GUI of Synaptic Manager. From there you can explore the installed packages.

    2. dpkg --get-selections

To get a list of packages installed locally do this in your terminal:

[email protected]:~$ sudo dpkg --get-selections | grep -v deinstall

To save that list to a text file called packages on your desktop do this in your terminal:

[email protected]:~$ dpkg --get-selections | grep -v deinstall > ~/Desktop/packages

     3.  aptitute

To get just the packages which were expressly installed (not just installed as dependencies), you can run

[email protected]:~$ aptitude search '~i!~M'

This will also include a brief description, which you may want. If not, use the option -F '%p'

     4. Create Backup

Create a backup of what packages are currently installed:

[email protected]:~$ dpkg --get-selections > list.txt

Then (on another system) restore installations from that list:

[email protected]:~$ dpkg --clear-selections

[email protected]:~$ sudo dpkg --set-selections < list.txt

To get rid of stale packages

[email protected]:~$ sudo apt-get autoremove

To get installed like at backup time (i.e. to install packages set by dpkg --set-selections)

[email protected]:~$ sudo apt-get dselect-upgrade

There are many documentations available in the internet and I searched only few intelligent peoples'  brain. There are many users out there with creative ideas to manipulate terminals and  bash scripts. it can by you as well.

So now I know to list out all the packages and save them in txt file. Next time I will show some methods to remove the old and obsolete packages. In a few blogs we will be able to maintain the speed of our OS i.e. UBUNTU

See you guys soon.