The file command provides information about any file system object (i. e., file, directory or link) that is provided to it as an argument (e. g., # file filename would return information about the file filename). What following expressions would return?

a. # file ???
b. # file *
c. # Is '.html *.txt
d. # Is *???

The answer is "Option a, c, and d".

Explanation:

This command aims to define the argumentation from each entity of the file system like a disc, path, or link. It checks the usage of a measurement system, which is requested to collect the information from either the inode of the item, the description of the option as follows:

i think it could be virus