PowerShell, Strings PowerShell #File numers.txt contains: #123-123-1234 #123-123-1235 #123-123-1236 Select-String -Path f:\power\numbers.txt -Pattern '^\d{3}-\d{3}-\d{4}' 12345 #File numers.txt contains:#123-123-1234#123-123-1235#123-123-1236Select-String -Path f:\power\numbers.txt -Pattern '^\d{3}-\d{3}-\d{4}'