e2fsck

e2fsck is a tool used to check and repair the integrity of a Linux filesystem called ext2, ext3, or ext4. Think of it as a diagnostic and maintenance program for your storage drive's structure, ensuring files are correctly stored, linked, and accessible. When there are issues like system crashes or improperly shut down computers, e2fsck scans the filesystem for errors or inconsistencies, fixing problems to prevent data loss or corruption. Regular use helps keep your storage healthy, ensuring your files remain safe and accessible.