A filename is a label, not the file.
In this interactive Linux lesson from Stencel Academy you don't just read — you type real commands like ls -i notes.txt, ln notes.txt backup.txt, ln -s notes.txt latest.txt and watch the machine respond on a live, animated map. It is part of the free How Linux Works course.
Builds on: Permissions — the gate.
stat notes.txt — Inode number, size, and link count.df -i / — Inodes are a finite resource too.readlink latest.txt — Show a symlink's target.