While in the Lab$4$ directory, use the ls $-$l command to answer the following: Note: make use of a range which is used within square brackets $[$abcxyz$]$ where abcxyz are the characters within that range. Don$$t forget to also use man command on ls to check out necessary options for one of the following questions. QUESTION $2$: What ls $-$l commands would you use to list: a$)$ the universities $($not states or regions$)$ that have the character $"$n$"$ in them. CSCI $2344$ Mr$.$ Torres b$)$ the universities $($not states or regions$)$ that start with the character $"$n$".$ c$)$ the universities $($not states or regions$)$ that have at least three vowels. d$)$ the states $($but not their contents$).$