I'm trying to use grep to display file names with .html extension but
they do not start with letters "d" to "p" in directory /usr4
In the second process I'm trying to use grep to find number of files
in the /usr4 directory that contain a "period" (.) in their names.
My next question is using grep utility How would you find the total
number of files in the /usr directory
Thanks for any help to those who respond to my questions.