You work as a Technician for Net World Inc.

The du command is used to summarize disk usage. The du command displays the number of blocks used for files. If the File parameter specified is actually a directory, the disk usage of all files within the directory are summarized. If no

File parameter is provided, the du command uses the files in the current directory.

Answer option C is incorrect. The df command reports information about space on file systems.

Answer option B is incorrect. The fsck command checks file system consistency and interactively repairs the file system.

Answer option D is incorrect. The dfsck command checks and repairs two file systems simultaneously on different drives.