NET-220 UNIX/LINUX Operating Environment

I just need a commands for the question below so i can use them in fedora

13.Issue the command to update the last modified datestamp on the test1 file. List the contents of the MyExam1 directory.

14.Issue one command to change both the owner and group owner of the test1 file to root. (Hint: you will need to run this command using root privileges). List the contents of the MyExam1 directory. 1

15.Issue the command to display the full path to the current directory you are in.

16.Issue one of the several different commands you can use to quickly return to your home directory. List the contents of the directory