1. We've said that when we run gec on a .c file, there are several stages: preprocessing, compiling, assembling, and linking. (a) What happens during the preprocessor stage? What is input? What is output? (b) What happens during the compilation stage? What is input? What is output? (c) What happens during the assembly stage? What is input? What is output? (d) What happens during the linking stage? What is input? What is output? 2. What's the command to "go up a level in the directory tree? 2. 3. What's the command to "go to your home directory? 3. 4. What's the command to "go to the root of the directory tree? 4. 5. What's the command to delete a file? 5. 6. What's the command to delete a directory? 6. 7. What's the command to create a directory? 7. 8. What's the command to make a copy of a file? 9. What's the command to rename a file? 10. Suppose that there's a unix shell command called petronam. What's the command that I'd type in the shell in order to see the help page for the proper usage of petronam? 11. What's the unix shell command to view the contents of a file in hexadecimal? 12. What's the unix shell command to display a file one screen at a time? 13. How would I run the command keurig taking its input from a file called beans? 14. How can I take the output of a bake command and use it as input for a slice command? 15. What's the command to print a long directory listing (names, permissions, owner, length, etc)? 16. What's the command to alter the permissions of a file to allow the owner to read, write, or execute the file