How to output return value using Powershell?

Question

I want to output the return of this process. Anyone can help me please. Thank you.

$name = $false 
switch -regex -file .\bios.txt {
    '^Product Name' { $name = $true; continue }
    '^\s' { if ($name) { $_.Trim() }}
    '^\S' { if ($name) { return } Out-File .\PN.txt}

}

I tried that way, but the output file is empty.

Answer 1

The Out-File .\PN.txt command is only ever reached for (a) lines that start with a non-whitespace character (\S) while (b) $name isn't $true. When it is reached, it creates an empty .\PN.txt file, due to lack of input.

If, perhaps, your intent was to send all output from the switch statement to a file, try the following:

$name = $false 
& { 
  switch -regex -file .\bios.txt {
    '^Product Name' { $name = $true; continue }
    '^\s' { if ($name) { $_.Trim() }}
    '^\S' { if ($name) { return } $_ }

  }
} | Out-File .\PN.txt