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How to write -replace in powershell where number follows sequence

For example, let's say I want to take a string Hello World

and use -replace

"World1" to output. This was my attempt at expressing:

"Hello World" -replace '.*(World)','$11'

But the problem here is that it sees $ 11 as the 11th sequence, not $ 1 and then 1. I tried to find an escape character to indicate that I want 1 after $ 1 but couldn't find anything.

The real world problem I was trying to solve was to collect a bunch of email addresses and create aliases with a number at the end. for example

jsmith@example.com

becomes

jsmith1@example.com
jsmith2@example.com
+3


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2 answers


Try "Hello World" -replace '.*(World)','${1}1'

Seemed to work here



        var s1 = "Hello World";
        var r = ".*(World)";
        var p = "${1}1";
        var outstr = Regex.Replace(s1, r, p);
        Console.WriteLine(outstr);

Output World1

+5


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try this:

$Email = "jsmith@example.com"
$Domain = ($Email -split "@")[-1]
for ($i=1;$i -le 5;$i++)
{
(($Email -split "@")[0] + $i),$Domain -join "@"
}

## Result 
jsmith1@example.com
jsmith2@example.com
jsmith3@example.com
jsmith4@example.com
jsmith5@example.com


If you don't need that, you can avoid the for loop and just replace $ i in this section:

$Email -split "@")[0] + $i
+1


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