In this chapter, we have taken a look at regular expressions and their use in PowerShell.
The Regex basics section introduce a number of heavily used characters. Anchors showing how the start and end of a string or a word boundary may be used to restrict the scope of an expression.
Character classes were introduced as a powerful form of alternation, providing a range of options for matching a single character. Alternation was demonstrated using different sets of expressions to be evaluated.
We looked at repetition using "*", +, ?, and curly braces and discussed the notion of greedy and lazy.
Grouping was introduced as a means of limiting the scope of alternation to repeat larger expressions or to capture strings.
Finally, a number of examples were included, bringing together the areas covered in this chapter to solve specific problems.
In Chapter 11, Files, Folders...
