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Understanding Linux Filesystem Inode Tables

Introduction The inode table is one of the most fundamental data structures in Linux filesystems, yet it remains mysterious to many users. An inode, short for index node, is essentially a data structure that stores all the metadata about a file or directory except for two crucial pieces of information: the filename itself and the actual file content. This separation of concerns is what makes Unix-like filesystems elegant and efficient. ...

October 4, 2025 · 10 min · Ashish Kushwaha