These are simple UNIX/C programming questions. Please answer all 4. Thank you!

QUESTION 4 if you are only interested in knowing which files are directories and which are executable files, you must use the the Is command. flag with -C -F -a QUESTION 5 The operator captures the remainder when an integer number is divided by an integer. QUESTION 6 The expression price *-rate + 1 is equivalent to the expression _- price- price(rate + 1) oprice- pricerate 1 price-(pricerate)+1 price-price (rate + 1) QUESTION 7 Which of the following command will rename (i.e. change the file name) a file from Hw2 to Hw2.cpp? rm Hw2 Hw2.cpp mv Hw2 Hw2.cpp cp Hw2 Hw2.cpp cat Hw2 Hw2.cpp