Powershell Select-String -pattern -notMatch

Question

I have lines -

echo $LocalAdmins
    Administrator
    Domain-Administrator
    daemon
    SomeUser

• Line 1-3 should be same although there could be situation where Domain-Administrator doesn't exist so simply counting lines won't help because User might hide in 3rd line.

• Line 4 string changes, there could be more than 4 lines either as well as no Line 4 at all.

• I'm not sure yet if lines change their position or not.

I need to get string that is -notMatch "Administrator", "Domain-Administrator", "daemon". I.e., I need user names that are in this list.

Is there a way to use more than one -notMatch with -and or ()? Currently I'm stuck with code that use only one -notMatch. And I can't use -Match because there could be 2+ users in the list.

$LocalAdmins | Select-String -pattern "Administrator" -notMatch

Answer 1

Like this?

$LocalAdmins | select-string -Pattern 'Administrator|daemon' -NotMatch | select -expa line

-pattern accepts REGEX. You can use the | ( or regex operator ) to add others words to fit your needs.

Answer 2

Assuming that $LocalAdmins is an array you could do this:

$exclude = 'Administrator', 'Domain-Administrator', 'daemon'
$LocalAdmins | Where-Object { $exclude -notcontains $_ }