Dot prefix folder in ubuntu

Ubuntu : I surprised after finding some data in my pen drive on ubuntu. I was copied folder prefixed of dot( "." [e.g] .m2) from my window laptop. But it was missing when plugged ubuntu. I am just confident with what I have been copied. So, I thought of finding it with google as ".folder in ubuntu".

I found a link,
http://www.cyberciti.biz/faq/explain-linux-unix-dot-files/

"A dot file is nothing but a configuration file usually stored in users home directory."

from the above line I got the nice information that ubuntu storing all the configuration data inside the .file and .folder

E.g to view the .folders

$ ls -a
$ ls -ld .*
$ ls -a | grep '^\.'

But here the point I don’t want to last my folder which is copied already.So I chooses to go with terminal (command prompt). He never pushed me down.

$cd .m2 

Using the above command I able to be inside the .m2 . So the problem solved, with coping the data from the current directory.

$ls 

output:
repository

The $ls command shown me the subdirectories of current path.

$cp -r repository ../

after using the copy command I got the subdirectory outside of the .m2 folder.

Note: I used the -r argument for the copy command because my subdirectory have some more subdirectory inside.