PowerShell Robocopy 捕获错误消息

Question

When I use robocopy with invalid source directory I get the following message returned from PowerShell. My question is is the error message "2021/12/09 01:55:41 ERROR 3 (0x00000003) Accessing Source Directory c:\artifactTempDir....The system cannot find the path specified."

Is this stored in any variable? i am just trying to capture these two lines from the entire message.

Answer 1

Assuming that robocopy writes its error messages to the stderr stream (which it should):

$stdout, $stderr = (robocopy ... 2>&1).Where({ $_ -is [string] }, 'Split')

$stderr now contains any stderr output (and $stdout contains the stdout output).