Is there a default path to library in ubuntu?

Is there a default path to library in ubuntu?

References

Reference NO 1

http://stackoverflow.com/questions/15186441/is-there-a-default-path-to-library-in-ubuntu

Reference NO 2

http://askubuntu.com/questions/228374/overriding-default-search-location-for-library-on-ubuntu-12-04-1

Reference NO 3

http://ubuntuforums.org/showthread.php?t=496553

Reference NO 4

http://blog.andrewbeacock.com/2007/10/how-to-add-shared-libraries-to-linuxs.html

Reference NO 5

https://help.ubuntu.com/community/EnvironmentVariables

Reference NO 6

https://wiki.ubuntu.com/MultiarchSpec

Reference NO 7

http://piyushparkash.blogspot.com/2012/10/installing-boost-150-in-ubuntu-1210.html

Reference NO 8

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