Filesystem Hierarchy Standard

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Across
  1. 2. Configuration files for system and applications, e.g., /etc/passwd.
  2. 3. Libraries for essential binaries in /bin and /sbin.
  3. 4. Virtual filesystem for system information, e.g., /proc/cpuinfo.
  4. 5. Files for the boot process, e.g., kernels, bootloader configuration.
  5. 6. Variable data like logs (/var/log) and spool files (/var/spool).
Down
  1. 1. User directories for personal data.
  2. 2. System binaries for administrative tasks, e.g., reboot, fsck.
  3. 3. User-installed software and tools.
  4. 4. Temporary files; cleared on reboot.
  5. 5. Device files representing hardware, e.g., /dev/sda.
  6. 6. Essential binaries used by all users, e.g., ls, cp.