Which directories are most important on Linux?
/ The root directory. All other directories are under this one./boot The kernel image, bootloader, and are stored here./etc Many of Linux's configuration files, including kernel module configuration./bin, /usr/bin, /usr/sbin Any of these "bin" directories will hold executable binaries (i.e. program commands)./usr This holds most user applications, documentations, graphics, etc./lib, /usr/lib Important system libraries are stored here./root The system administrator's home directory./home All other home directories for all users are here. For example, a user's home directory might be /home/user./var Variable data, such as mail spools, log files, etc./tmp Temporary files created and used by applications./dev Devices are setup in this directory./mnt Mount points for filesystems, whether physical or virtual./proc This is a virtual directory which contains information about the kernel/lost+found Files that might have been recovered after a bad shutdown or other event might show up in the lost and found.