How to pass strings to powershell from cmd with ampersands in values?

Question

In windows CMD, I want to run a powershell script and pass string params, which have quotes and ampersands in the params.

U:\Desktop>PowerShell .\post "http://domain/api/app?pLanguage=en-US\"&\"pCompanyID=816" "{\"Message\":\"test message - please ignore\"}" The string is missing the terminator: ". + CategoryInfo : ParserError: (:) [], ParentContainsErrorRecordException + FullyQualifiedErrorId : TerminatorExpectedAtEndOfString '\"pCompanyID=816"' is not recognized as an internal or external command, operable program or batch file.

How can I fix this issue?

To start with you should use PowerShell -Command "". In between those doublequotes, enter the command line you'd normally enter at a powershell prompt, and we'll take it from there! — Compo
– Compo, Commented Aug 28, 2019 at 21:00

mclayton · Accepted Answer · 2019-08-29 07:37:55Z

From another question on this site - How to escape ampersands, semicolons, and curly braces in command-line powershell params?

Wrap your command line strings in nested double and single quotes - e.g. "'[somestring]'".

In your specific case:

C:> powershell .\post "'http://domain/api/app?pLanguage=en-US&pCompanyID=816'" "'{\"Message\":\"test message - please ignore\"}'"

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