Just an addtion.
If you are not so familiar with linux command,I would advice that you install "open ssh server" on your NIT,then log into your NIT from your computer with a program named "WinSCP".
With WinSCP,all the file manage job such as transfer(even between PC and NIT) and copy、move can be done under a explorer like interface.Sooner or later,you will find this program tp be so useful.