1. Answer by True or False the below questions (6 points) TRUE FALSE 1) The UNIX command interpreter is called the shell 2) If the return code of an executed UNIX command equlals to 0. this means that the command execution was successful. 3) The test "test -s filet" checks to see whether filel exists and is longer than 0 bytes. 4) UNIX shell uses the symbol ">" for Input redirection. 5) When you type pwd at the command prompt, the output will be the relative pathname