Question:
How can you replace the last occurrence of a substring in a string?
Answer:
Regular Expressions can also perform this task. Here is an example of one that would work. It will replace the last occurrence of “Aquarius” with “Bumblebee Joe”
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$text = "This is the dawning of the age of Aquarius. The age of Aquarius, Aquarius, Aquarius, Aquarius, Aquarius" $text -replace "(.*)Aquarius(.*)", '$1Bumblebee Joe$2' This is the dawning of the age of Aquarius. The age of Aquarius, Aquarius, Aquarius, Aquarius, Bumblebee Joe |
The greedy quantifier ensure that it take everything it can up until the last match of Aquarius. The $1 and $2 represent the data before and after that match.
If you are using a variable for the replacement you need to use double quotes and escape the $ for the regex replacements so PowerShell does not try to treat them as a variable
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$replace = "Bumblebee Joe" $text -replace "(.*)Aquarius(.*)", "`$1$replace`$2" |