


                The Unix/Linux FileSystem
                
                I have computer w/ a number of drives attached
                in Windows I would have C:, D:, E:, etc
                
                In Unix/Linux I have a single "tree" w/ a drive
                mounted onto a dir
                
                so a single Linux system could span a number
                of devices (I use the mount command to see attached devices)
                
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                the root of the Unix/Linux FileSystem is 
                
                / <- called "root"
                
                Dirs within Unix/Linux I should know about:
                
                / <- the root, permission on root should be very restricted
                /u, /home, /users <- depending on distro, Home dir for User
                                         /home (linux standard)
                                  under the Home dir, will be a dir for
                                  each User
               /bin, /sbin <- command location (sbin is SysAdmin commands)
               /boot <- boot sctips
               /root <- home dir for SuperUser (root user)
               /dev <- location of device drivers for Kernel use
               /etc <- Config file location <- CRITICAL
               /usr <- NOT USER FILES, home of the OS files
               /var <- logging, email, printer spooling files, etc
               
               
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                FileSystem rules:
                
                1) I can use a Absolute path, absolute paths start at root
                    /home/jonathan/work <- an absolute path
                    
                2) I can use a Relative path, relative paths start in the current 
                    dir (do not start with /)
                    
               
               I can going to reset my Primary Prompt to display the 
               current dir
               
               PS1='$PWD=> '
               
               Unix/Linux have Path "shortcuts"
               
               for example
               
               . <- current dir
               .. <- parent dir
               ~ <- Your Home Dir
               ~User <- the Home of that User
               
               
               
               
               
                    
                                  
