试试这个:

$app = 'app.exe -help'
Invoke-Expression $app

用这个测试，它按预期工作:

Tested with this and it worked as expected:

$pingTest = 'ping -n 8 127.0.0.1'
Invoke-Expression $pingTest

根据您的扩​​展说明，您似乎想要在同一命令提示符下运行 2 个命令.这是可能的，但是，我不确定它是否适用于您的场景.例如:

From your expanded explanation you appear to want to run 2 commands within the same command prompt. This is possible, however, I'm not sure it will work in your scenario. For example:

test1.bat:回声你好！"

test2.bat: echo "goodbye!"

test2.bat: echo "goodbye!"

$batchTest = "test1.bat && test2.bat"
cmd /c $batchTest 

输出:

D:\Test>echo "hello!"
"hello!"

D:\Test>echo "goodbye!"
"goodbye!"

希望这会有所帮助.