What type of information does the command 'df -i' provide?

The command 'df -i' provides inode usage information. Inodes are data structures on a filesystem that store information about files and directories, such as their attributes, ownership, and location on the disk. Each file or directory on a filesystem corresponds to an inode. When you use 'df -i', it displays the number of inodes used and available on each filesystem, along with other inode-related statistics. This information is crucial for assessing the health of a filesystem, especially since inodes can become exhausted even if there is still disk space available.

The other choices focus on different aspects of filesystem data. Disk usage statistics pertain to how much space is utilized and is reported by the standard 'df' command without the '-i' option. File size information is more specific to individual files and can be obtained using different commands like 'ls -l', rather than 'df -i'. File system type information typically comes from commands like 'df' combined with specific options or using 'lsblk', rather than being part of the output of 'df -i'.