recovering lost directory in Linux OS
 

I have lost a root/ user directory.tried to change the username, but unfortunately my root/user directory
is missing.How to recover it?

You could use a search a bit here is a thread about your issue:

http://www.linuxquestions.org/questi...ectory-199677/

Regards

Alternatively you can simply create directory with
Than recreate all the files, If you need templates of the shell files you can check them on "/etc/skel/".

If you can't log into your system, or can not start your system, than use live (cd/usb) or use recovery cd.

Hope you wont have issues, just follow the onscreen instructions. It is not that hard.

and its not in your trash.

Have you checked in .trash in that partition

ls -la
is .trash listed and if so

cd .trash

ls -l