How to extract the number in the string “Task(12345)” with Regular Expression and Powershell?

Question

How to extract the number in the string \"Task(12345)\" with Regular Expression and Powershell? I tried the following, but no chance.

$file = gc myfile.txt
$         


        

Answer 1

Keep in mind that Select-String makes this a one-liner:

PS> Select-String 'Task\((?\d{1,5})\)' myfile.txt | 
        %{$_.matches[0].Groups['num'].value}