Filesystem Hierarchy: The Directory Tree
Categories: Fundamentals Filesystem
Standard directories /, /bin, /etc, /home, /var, /usr, /tmp and their purposes. Difference between /bin and /usr/bin. The role of tmpfs and a separate /var partition.
Filesystem
Permissions and Ownership: Access Control
Categories: Fundamentals Filesystem
POSIX permissions using rwx notation and octal notation. Differences between file and directory permissions. chown and chmod for changing ownership and permissions.
Links and File Types: Flexible Usage
Categories: Fundamentals Filesystem
Hard links vs. symbolic links (soft links). Special files in /dev as device interfaces. The inode concept and when each link type is appropriate.