Solution: Print only those lines consisting of a complete HTML entity

…The challenge in this case is to print from an…HTML file only lines that consist of complete HTML entities.…That is, lines that begin with an HTML…tag, and end with the corresponding closing tag.…This is one possible solution.…In the Begin section, we set the Field Separator to a regular expression, which…consists of a single character which is…either an opening or a closing angle bracket.…Let me show you the effect that this has on an HTML line.…

This line begins with the <li> and ends with the </li>.…With the field separator, bracket, angle bracket, angle…bracket bracket, which specifies a single character which is…either an opening or a closing angle bracket,…the number of fields in this case is nine.…The first one is an empty field, which is the no characters…that exist between the beginning of the line and the opening angle bracket.…The second field is the li.…The third field this is a, fourth field is the…i, fifth is list, sixth is the slash i, seventh…is space item, eighth is the slash li, and the…ninth field is the empty field after the closing angle bracket.…