What is Inode Number ?

The inode (index node) is a fundamental concept in the ext2 filesystem. 

Each object in the filesystem is represented by an inode. The inode structure contains pointers to the filesystem blocks which contain the data held in the object and of the metadata about an object except its name. 

The metadata about an object includes the permissions, owner, group, flags, size, number of blocks used, access time, change time, modification time, deletion time, number of links, fragments, version (for NFS) and extended attributes (EAs) and/or Access Control Lists (ACLs).
 
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Maintained By Amit Maheshwari