There are 2 repositories under linux-filesystem topic.
A simple and easy way to generate your Linux File-system permissions.
Deck of Anki flashcards for the LPIC-1 (Linux System Administrator), exam 102-500 of the Linux Professional Institute (LPI).
A basic file system in user space written in C using FUSE
A package with necessary codes for image, video, audio, ,ebooks, vectors and scalable graphics and file system formats.
Linux filesystem with a Google Docs backend, built using FUSE
A Linux module to read partitions formatted with APFS file-system
FUSE (filesystem in userspace) for Linux.
A secure C library to check integrity of a file
A fully responsive, cross-browser functional file management system written in NodeJS.
Creating the journal of Linux FAT filesystem
Simulating Linux Path Traversal in Java
Change a mounted FAT filesystem's label while being used
Decentralized File System for Unstructured Big Data. The Linux file system driver is developed by c++. The driver uses Cassandra for file profile and uses an Object Storage System for file contents.
A demo for file search program on Linux, where users can find and delete files by various metadata
This will give you details about disk usage of any directory you want