Issue finding and replacing regex in Powershell

Question

I have an ini file that looks like this:

[list_text]                       
text_002=L-Win+3=Regards\nThomas

I try to find and replace the "\nThomas" with a different name:

$settings = Get-Content -Raw $path -Encoding UTF8
$settings = $settings -replace '`r`nThomas', '\nMike'

I tested different ways trying to find the "\nThomas" but nothing seems to work.

You're looking for a literal \: -replace '\\nThomas', '\nMike' — Mathias R. Jessen
– Mathias R. Jessen, Commented Aug 30, 2022 at 11:57
thanks it is working! If you paste this as answer I can mark it correctly. — Grobanix
– Grobanix, Commented Aug 30, 2022 at 12:00

Mathias R. Jessen · Accepted Answer · 2022-08-30 12:07:24Z

3

The pattern "`r`n..." will look for a literal carriage return and newline characters.

You aren't looking for any of those, you're looking for the verbatim escape sequence \n. To describe a backslash in a regex pattern, escape it with another backslash:

$settings -replace '\\nThomas', '\nMike'

You can also use [regex]::Escape() to escape any given verbatim string:

$settings -replace ([regex]::Escape('\nThomas')), '\nMike'

answered Aug 30, 2022 at 12:07

Mathias R. Jessen

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