Question - Describe the usage and functionality of the command “rm –r *” in UNIX? 
          
        
        Answer - 
        
The command “rm –r *” is a single line command to erase all files in a directory with its subdirectories.
“rm” – command for deleting files.
“-r”   – command to delete directories and subdirectories with files within.
“*”     – indicates all entries.