Which command lists shared inode numbers for files in a directory?

The command that lists shared inode numbers for files in a directory is the one that includes the '-i' option with 'ls'. When you use 'ls -i', it displays the inode number associated with each file in the directory.

Inodes are unique identifiers for files within the filesystem, storing metadata about the files rather than their names or contents. When multiple filenames point to the same inode, it indicates that those files are hard links to the same underlying data on disk. Therefore, by using 'ls -i', you can easily identify which files share the same inode number, highlighting these relationships directly in the output.

The other commands have different functionalities. For example, 'ls -l' provides a long listing format that shows detailed information about files but does not include inode numbers. 'ls -a' lists all files, including hidden ones, but also lacks inode information. The 'find -name' command is used to search for files by name, rather than listing them with their inode numbers. Thus, the selection of 'ls -i' is the most appropriate for identifying shared inode numbers in a directory.