• Write and test a framework Command Shell Interpreter of stub routine s in C using a table lookup framework that does the following Recognize the following command using a case insensitive compare: (2 marks) 
• a. help topic1 topic2 topic3... 
• b. owner file1 file2 file3.... 
• c. list recordNo1 recordNo2 ...... 
• d. append records 
• e. swap recordNo1 recordNo2 
• f. shell 
• g. exec i. exec1 command ii. exec2 command 
• h. sort field name