Question 22 What do you type to display the current username? Question 23 If you modify the default value assigned to an environment variable, that value will apply only to the current session. To have the change apply to all other shell sessions, you must the variable. Question 24 What do you type to switch to the root user and load the root user's environment? Question 25 The following is a list of the first four sections typically found in a man page. Which of these sections displays the syntax for correctly typing the command? Question 26 What do you type to create an alias called syslog that displays to the screen the last 5 lines of the /var/log/syslog file? Question 27 You are logged on as wadams. There is a file in your home directory called new_myfile.txt and you want to see its content displayed on the screen and at the same time send the output to a file in the /tmp directory called new.myfile.shared. What do you type? (use absolute paths) Question 28 Use file globbing to list all files in the /tmp directory that have sales (or Sales) in the filename