Let's assume you want to chop off some text at the end of a string. This is the traditional approach using string operations:
$text = "Some text" $fromRight = 3 $text.Substring(0, $text.Length - $fromRight)
A much more powerful way uses the -replace operator with regular expressions:
$text = "Some text" $fromRight = 3 $text -replace ".{$fromRight}$"
This would take any character (".") that is $fromRight characters long and ends with the end of text ($).
Since regular expressions are really flexible, you could rewrite it to chop off digits only, and only a maximum of 4:
$text1 = "Some text with digits267686783" $text2 = "Some text with digits3" $text1 -replace "\d{0,5}$" $text2 -replace "\d{0,5}$"
The quantifier "{0,5}" tells the regex engine that you want between 0 and 5 numbers, and the engine will take as much as it can get.
