33. What of the following tool is used to check and repair Linux file systems?fdiskmountmkfsfsck

Break Down the Problem

1. Identify the purpose of each tool: Understand what each tool is used for in the context of Linux file systems.
2. Determine the correct tool: Find out which tool is specifically associated with checking and repairing file systems.

Relevant Concepts

1. fdisk: A tool for partitioning disks; it does not check or repair file systems.
2. mount: A command used to mount file systems, making them accessible; it does not check or repair file systems.
3. mkfs: Stands for "make filesystem"; it formats partitions and creates file systems, but does not check or repair them.
4. fsck: Short for "file system check"; it is specifically designed to check and repair inconsistencies in file systems.

Analysis and Detail

• fdisk: Useful for setting up partitions but has no role in maintenance.
• mount: Necessary for accessing a file system but not for repairs.
• mkfs: Creates file systems anew but cannot fix existing ones.
• fsck: This tool can find errors in file systems and attempt to fix them, making it essential for system maintenance.

Verify and Summarize

Given the roles of these tools, it is clear that only fsck is utilized for checking and repairing Linux file systems.

Final Answer

The tool used to check and repair Linux file systems is fsck.