Absolute Pathnames
 - Always start with a '/'
 - ( Note that it's a forward slash, not the backslash - windows uses the backslash, linux
   uses the forward slash )
 - Always point to the same location, no matter what your current working directory is,
   ie, /root always points to /root, regardless of if you're in the /usr/local/bin directory,
   or the /lib directory, or anywhere else, "/root" refers to the same directory


Relative Pathnames
 - *Never* starts with a '/'
 - Always dependant on your current working directory
 - Often times, relative pathnames make use of the '.' and '..' special files
 - If you're CWD is "/root", then a reference to a file named "cat" would look for the file
   in the "/root" directory, ( abs path: "/root/cat" )
( Assuming /root is CWD )
"../alice" -> "/alice"
"./../root/bob" -> "/root/bob"
( Assuming /usr/local is your CWD )
"bin/openssh" -> "/usr/local/bin/openssh"
"../lib/openssl" -> "/usr/lib/openssl"
"../../root/bob" -> "/root/bob"
 
Special Files ( are in every directory ):
 "." : refers to the directory it's in.
   Ex: "/etc/." -> "/etc" and "/root/." -> "/root"

 "..": refers to the parent directory
   Ex: "/etc/.." -> "/" and "/usr/local/bin/.." -> "/usr/local"
       Trick question: What does "/.." refer to?   Refers to "/" ( itself )