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Special files are the basis on which Linux sits since they represent
the devices connected to a computer, such as a printer. In this way,
enter information in that file is equivalent
to sending information to
the printer. For the user, these devices have the same appearance and
use than ordinary files
Links
Links are an ordinary file type that have the goal to create a new name for a
determined file. Once the symbolic link is created,
it allows access to the
file that links in the same way as if we had copied the contents of it to
another file, with the advantage that it has not really been copied. The
symbolic links are especially useful when you want a group of people to
work on the same file since they allow sharing the file but centralizing the
modifications.
As an example, you can assume the
existence of a file called
balance.1999.txt, to which a link is created symbolic balance.txt. Any
access to balance.txt is translated by the system so that you access the
balance content.1999.txt.