Question

For my tests I am using ‘Start > Run’ dialog (not the cmd.exe).

This works fine, and I get 9 in log.txt

powershell -Command 4+5 > c:\log.txt 

But this does not work:

powershell -EncodedCommand IAA1ACsANwAgAA== > c:\log.txt 

So how can I redirect output in this case?

Experimental code:

function Test {     $cmd = { 5+7 }     $encodedCommand = EncodeCommand $cmd      StartProcess 'powershell -Command $cmd > c:\log.txt'     StartProcess 'powershell -EncodedCommand $encodedCommand > c:\log2.txt' }  function StartProcess($commandLine) {     Invoke-WMIMethod -path win32_process -name create -argumentList $commandLine }  function EncodeCommand($expression) {     $commandBytes = [System.Text.Encoding]::Unicode.GetBytes($expression)     [Convert]::ToBase64String($commandBytes) } 

Answer 1

The ‘Run’ dialog doesn’t seem like it provides redirection at all. According to this usenet post you only get redirection if you have a console. I wonder if the redirection parameter is being parsed by powershell.exe, which is choosing to redirect if it’s not receiving encoded input? Sounds like a question for Raymond Chen.

Anyway, this works, at the expense of spawning an otherwise useless console:

cmd /c powershell -EncodedCommand IAA1ACsANwAgAA== > c:\ps.txt