However, the PowerShell statement returns a new string, leaving $greeting unchanged, while the corresponding Perl statement changes the string $greeting in place. Would return “ Hello planet“, as would the statement Would return a Boolean true value just as the Perl statement Which would be legal PowerShell or Perl code. PowerShell has -match and -replace operators that are roughly analogous to the m// and s/// operators in Perl. Because PowerShell is new, detailed documentation and examples are harder to find than for. NET or Perl, the difficulty in using PowerShell is not in the syntax of regular expressions themselves, but rather in using regular expressions to do work. For someone familiar with regular expressions, especially as they are implemented in. NET in turn essentially uses Perl 5’s regular expression syntax, with a few added features such as named captures. In regular expressions, as in much else, PowerShell uses the. The focus is not on the syntax of regular expressions per se but rather how to use regular expressions to search for patterns and make replacements. Comparisons will be made with Perl for those familiar with the language, though no knowledge of Perl is required. This page is written for the benefit of someone familiar with regular expressions but not with the use of regular expressions in Microsoft’s PowerShell.
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