You have an xfs file system in your linux system represented by /dev/sdb1 you need to copy all the filenames on the drive to the /reviewxfs file you must be able to read the filenames in the /reviewxfs file which command should you use?

xfs_metadump -o /dev/sdb1 /reviewxfs

Explanation:

In Linux, the command xfs_metadump is a debugging service which will copy a  metadata in an XFS filesystem to a file. The command must be followed by the source argument which is the pathname and the target argument as well that is the new file name. (in this case /dev/sdb1 /reviewxfs). - O, indicates that the output should be sent to the standard output stdout

i think it could be virus