How to capture error messages thrown by a command?

Question

I am writing a PowerShell script where in I need to capture the error message that it\'s throwing. Note: according to PowerShell, there is no error and command is executed s

Answer 1

Inspired by David Brabants answer, you can combine both stdout and stderr into one string array using this command:

$output = [string[]] (.\Cli.exe -p $param 2>&1)

It will execute Cli.exe with the parameter p. This is optionally.

Clarification

2>&1 means the stream #2 (stderr) will be redirected to stream #1 (stdout), thus both streams will arrive in $output.