3. Before writing this program note the group id # of your alternate group (sharks, minnows, dolphins) using the id command. Implement the following: cmd file1 file2 file3 file4 ..... a. Attempt to create each of the files listed, report on your success using perror. At least one of these files should previously exist. b. Use truncate to alter the size of each file to a random size between 20 and 100 bytes. then change the group ownership of these files to your alternate group. c. End your program by using the system along with the Is command to show that this worked. 3. Before writing this program note the group id # of your alternate group (sharks, minnows, dolphins) using the id command. Implement the following: cmd file1 file2 file3 file4 ..... a. Attempt to create each of the files listed, report on your success using perror. At least one of these files should previously exist. b. Use truncate to alter the size of each file to a random size between 20 and 100 bytes. then change the group ownership of these files to your alternate group. c. End your program by using the system along with the Is command to show that this worked