在 powershell 中使用 select-string 后如何找到 substring？

Question

How do I continue to get the 12345 as output?

file.txt

MyText: 12345

myscript

Get-Content file.txt | Select-String "MyText:" | Select-Object Line

Now I would like to save last five characters, how to I retreive them?

Answer 1

The Select-String cmdlet -Pattern parameter expects a regex - so you can get your desired output by capturing the five digits. Note that the Select-String cmdlet also takes a -Path parameter to retrieve the content of a file. This means you can omit the first Get-Content command:

(Select-String -Path .\file.txt -Pattern 'MyText: (\d{5})').Matches.Groups[1].Value