Alright, time for a lab. Use head and tail to display the 5th line of the file etc-pass-wd.
Next use set to display the 5th line of this file as well. Then use awk in a pipe to filter
the last column out of the results of the command ps-aux. And use grep to show the names
of all files in etc that have lines that contain the text root as word. Next use grep to show
all lines from all files in etc that contain exactly 3 characters. Then use grep to find
all files that contain the string alex but make sure that alexander is not included in
the result.