There are two types of links
symbolic links: Refer to a symbolic path indicating the abstract location of another file
hard links : Refer to the specific location of physical data.
To
create a symbolic link in Unix or Linux, at the shell prompt, enter the following command:ln -s {target-filename}
{symbolic-filename}
Reference:
http://www.cyberciti.biz/faq/creating-soft-link-or-symbolic-link/
http://manpages.ubuntu.com/manpages/lucid/man1/ln.1.html
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