5/24/2023 0 Comments Powershell regex replaceHowever, this means knowing all of the regular expression special characters and modifying the input string. To avoid this, we can use the regular expression escape character to escape the square brackets: PS > "Power" -replace "\","ful" In regular expressions, square brackets around a set of characters means “match any of the characters inside of the square brackets.” In our example, this translates to “Replace the characters S, h, e, and l with ‘ful’.” For example: PS > "Power" -replace "","ful" To prevent PowerShell from interpreting these characters, use a nonexpanding string (single quotes) as shown in the Solution.Īnother, less common pitfall is wanting to use characters that have special meaning to regular expressions as part of your replacement text. Given the power of the regular expressions it uses, the -replace operator carries with it some pitfalls of regular expressions as well.įirst, the regular expressions that you use with the -replace operator often contain characters (such as the dollar sign, which represents a group number) that PowerShell normally interprets as variable names or escape characters. For an approach that uses input and output examples to learn automatically how to replace text in a string, see Recipe 5.14.
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