some basics command in linux system. Answer the following 4 commands:

5 ) Write a command that will create a file named: ( -i ) in the working directory?

6 ) What is a shadow password file? How can you determine if the BMC Linux server uses a shadow password file?

7 ) Write a find command that will identify and delete all files in the working directory (and its descendents) that have not been modified in the preceeding 24 hours.

8 ) Write a find command that will identify and delete all files in the working directory (and its descendents) that have a name that begins with a, e, i, o, or u and is exactly 8 characters long.