What is the identity of each file in the linux file system?

What the editor shares with you today is what each file logo in the linux file system uses. I believe many people don't know much about it. In order to make you understand better, I summarized the following contents for you. Let's look down together. I'm sure you'll get something.

What is the identity of each file in the linux file system?

Each file in the Linux file system is identified by an index node.

The Linux file system uses an index node to record file information. The file allocation table acting on Windows is similar. An index node is a data structure that contains file name, location, size, establishment or modification time, access rights, ownership and other file control information of a file. A file system maintains an array of index nodes. Each file or directory corresponds to the only element in the array of index nodes, and each index node is assigned a number, that is, the index number of the node in the array, called the index node number.

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