Which command would you use to view the partitions and filesystem types on your system?

The command that allows you to view the partitions and filesystem types on your system is blkid. This command is particularly useful for identifying the various block devices on your Linux system along with their corresponding filesystem types. When you run blkid, it outputs a list of all block devices and displays detailed information, including the device name, UUID (Universally Unique Identifier), and the type of filesystem (like ext4, xfs, etc.) associated with each.

While the other commands can be useful in their own capacities, they serve different purposes. The du command provides information about disk usage for files and directories, displaying how much space they consume. The df command shows the amount of disk space used and available on filesystems but does not specifically provide information about the filesystem type of each partition. Lastly, iostat is used for monitoring system input/output device loading by observing the time devices are active relative to their average transfer rates, and it doesn't give details about partitions or filesystem types.

For someone looking to manage storage or troubleshoot filesystem issues, understanding the output from blkid is essential, as it lays the groundwork for further operations such as mounting or formatting filesystems.