Libname:

Libname is the path of a folder where you will be storing and accessing files from. You tell SAS that this is the place where you will find the files, Which I am mentioning or referencing them in my programe.

Path are of two types: One is the physical path in your computer, say C,D or E drive.
Second : Is the server Path where you mention your server path.

syntax:

Libname 'Path' ;