Redirection of standard and error output appending to the same log file

Question

I need to collect the standard output and error log from several processes into one single log file.

So every output must append to this log file.

Answer 1

Maybe it is not quite as elegant, but the following might also work. I suspect asynchronously this would not be a good solution.

$p = Start-Process myjob.bat -redirectstandardoutput $logtempfile -redirecterroroutput $logtempfile -wait
add-content $logfile (get-content $logtempfile)