How to run a PowerShell script from Cygwin SSH session?

Just invoke powershell with the relevant arguments and pipe it to wherever you want it? You need to make sure it's in the PATH of course.

Barry Kelly is right.

You need to use my wrapper software that creates a hidden console and runs PowerShell on it.

My page is here: http://sergeybelous.com/SHELL-TERMINAL.html#proxywinconsole.exe

Someone already found my wrapper software and created a tutorial here: https://ssh-with-powershell.blogspot.com/2013/07/enable-ssh-with-powershell-and-remove.html

First thing it is good to add PowerShell's executable path to user's PATH environmental variable. We do it by adding to user's .bashrc file line like:

export PATH=${PATH}:"/cygdrive/c/WINDOWS/system32/WindowsPowerShell/v1.0"

Then we can run PowerShell script just typing in our SSH session

powershell.exe -File "c:\u.ps1"

Of course now we can pipe it to use it's output.

I just wonder why I have to press "Enter" two times in my SSH session after typing the command for it to work.

Try it with no inputformat

powershell.exe -inputformat none -noprofile echo hello

Can be useful for not having to deliver a file to the local machine.