❑ inode : This is a data structure used in Unix/Linux file system. Each file has its own inode, and the inode stores property about the file.
* About 1% of the total space of the file system is used for inodes. When this space is full, no more files can be created(df -i).
❑ The contents of inode(POSIX)(64 Bytes)
| Content | Description |
| File mode | File's permission(drwxrwxrwx)(2 Bytes). |
| Number of links | Number of Hard links. |
| User ID | UID of the file. |
| Group ID | GID of the file. |
| Device ID | Determining the scope to which the serial number can be identified. |
| File path | Address of the file. |
| Access time | A timestamp value. |
| Modify time | A timestampt value. |
| Change time | A timestamp value(More info - Link). |
| File size | Byte unit. |
| Serial number | Unique ID of the file for identification purpose(inode number). |
| I/O block size | The size of the configured I/O block. |
| Allocated blocks | The number of blocks allocated to this file. |