A linked file is a file that contains a reference to another file or directory. There are two types on linkes soft and hard. A hard link can not access folders on a diffrent volume, where as soft links can. Heres how to create soft link files.

ln -s source_file link_name
ln -s /media/Gama Gama

Links are removed if the source file is removed or has no other files poinint to it. If you want to remove the link use the unlink commnd.