Linux File Structure

/root [shortcut:~ /] ║ ╠══ /etc [configuration files for the system] ╠══ /bin [essential binaries] ╠══ /sbin [essential system binaries for super user (root)] ╠══ /lib [shared code between binaries] ╠══ /usr [user utilities and applications] ║ ║ ║ ╠══ /usr/bin [most user commands] ║ ╠══ /usr/include [standard include files for "C" code] ║ ╠══ /usr/lib [obj, bin, lib files for coding & packages] ║ ╠══ /usr/local [local software] ║ ║ ║ ║ ║ ╠══ /usr/local/bin ║ ║ ╠══ /usr/local/lib ║ ║ ╠══ /usr/local/man ║ ║ ╠══ /usr/local/sbin ║ ║ ╚══ /usr/local/share ║ ║ ║ ╚══ /usr/share [static data sharable accross all architectures] ║ ║ ║ ╚══ /usr/share/man [manual pages] ║ ╠══ /var [variable data files] ║ ║ ║ ╠══ /var/cache [applcation cache data] ║ ╠══ /var/lib [data modified as programmes run] ║ ╠══ /var/lock [lock files to track resources in use] ║ ╠══ /var/log [log files] ║ ╠══ /var/opt [variable data for installed packages] ║ ╠══ /var/tmp [temporary file saved betwwen reboots] ║ ╠══ /var/spool [tasks waiting to be processed] ║ ║ ║ ╠══ /var/spool/cron ║ ╠══ /var/spool/cups ║ ╚══ /var/spool/mail ║ ╠══ /home [user home directories shortcut:~] ║ ║ ║ ╠══ /alice ║ ╚══ /bob ║ ╠══ /dev [device files] ║ ║ ║ ╚═ /dev/null [null device, aka."bit bucket", like a rubbish bin in real life] ║ [output redirected to `/dev/null` is discarded.] ║ [`/dev/null` can be used for input to provide a stream of null values.] ║ ╠══ /boot [static files of the boot loader] ╠══ /tmp [temporary files] ╠══ /opt [add-on software] ╠══ /mnt [mount files for temporary file system] ╚══ /proc [process information]

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