Executing Angular Serve From Powershell With Parameters Fail

Question

I am attempting to run an angular server on a specific port launched from a Powershell script and angular reports configuration failure.

 & 'ng' @('serve', '--port', '5200')

The specified command ("serve --port 5200") is invalid. For a list of available options, run "ng help".

Did you mean "serve"?

Whereas without a port it works

& 'ng' 'serve'

I have tried & 'ng' 'serve --port 5200' and & 'ng' @('serve', '--port 5200') and it gets the same error message.

How does one resolve this or work around when attempting to execute ng serve with arguments from a script?

Don't group the arguments together like that: & ng serve '--port' 5200 should work — Mathias R. Jessen
– Mathias R. Jessen, Commented Jun 14, 2021 at 15:47

Mathias R. Jessen · Accepted Answer · 2021-06-14 15:54:56Z

1

Pass the arguments to ng as individual tokens (don't wrap the list in @(...)):

& ng serve '--port' 5200

answered Jun 14, 2021 at 15:54

Mathias R. Jessen

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1 Comment

mklement0 Over a year ago

That's definitely the best way to do it (as an aside: the quoting around --port is optional), but it's worth noting that the first command in the question works too: -- & 'ng' @('serve', '--port', '5200') (or just & 'ng' ('serve', '--port', '5200')) - given that an array's elements are passed as individual arguments to external programs.

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