Run MsiExec from PowerShell and get Return Code

Question

With BAT/CMD script I can simply use \"msiexec /i /quiet /norestart\" and then check %errorlevel% for the result.

Answer 1

$LastExitCode

or

$?

depending on what you're after. The former is an integer, the latter just a boolean. Furthermore, $LastExitCode is only populated for native programs being run, while $? generally tells whether the last command run was successful or not – so it will also be set for cmdlets.

PS Home:\> cmd /c "echo foo"; $?,$LASTEXITCODE
foo
True
0
PS Home:\> cmd /c "ech foo"; $?,$LASTEXITCODE
'ech' is not recognized as an internal or external command,
operable program or batch file.
False
1