…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.…
Author
Released
5/21/2014In this course, award-winning author and teacher David D. Levine shows you how to use AWK to read and write data in a variety of formats, produce reports, and automate repetitive tasks. He reviews the nuts and bolts of the language, such as field separators, pattern matching, variables, operators, expressions, and control structures; functions available for manipulating data; and integration with other programs like Excel.
- Determine what AWK is.
- Recognize how to write an AWK program.
- Determine how to use AWK command-line flags.
- Identify how to specify field and record separators with variables.
- Distinguish how to change a CVS file to a tab-separated one.
- Break down how to work with operators and arrays.
- Discover how to format output.
- Interpret how to string data with functions.
Skill Level Intermediate
Duration
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Video: Solution: Print only those lines consisting of a complete HTML entity