Which command would you use to determine this?

You are having an issue with the shutdown command. You wish to determine if the file is a script
or an executable program. Which command would you use to determine this?

A.
od shutdown

B.
file shutdown

C.
test shutdown

D.
cksum shutdown

E.
attrib shutdown

Explanation:
The file command determines the file type.
file tests each argument in an attempt to classify it. There are three sets of tests, performed in this
order: filesystem tests, magic tests, and language tests. The first test that succeeds causes the file
type to be printed.
Reference: man file