The index entry marketing, 1, 2, 3, 4, 5 is an example of an indented index

____________ testing is the process of trying out various sequences of input values and checking the results to verify that the application works as it was designed.

Fill in the blank(s) with the appropriate word(s).

Write a shell program called wgrep that searches a file for a given pattern, just as grep does. For each line in the file that matches, print a "window" around the matching line. That is, print the line preceding the match, the matching line, and the line following the match. Be sure to properly handle the special cases where the pattern matches the first line of the file and where the pattern matches the last line of the file.

What will be an ideal response?