How to start powershell with shebang from windows/cygwin/bash?

Shell Programming and Scripting
1

I would like to the the windws8/cygwin/bash shebang feature to start a powershell script.

I do a "chmod +x set-sound.ps1"

and then at a bash prompt I do
./set-sound.ps1

The first line of ./set-sound.ps1

#!powershell.exe -ExecutionPolicy unrestricted

The result is the result:

./set-sound-output.ps1
At line:1 char:33
+ "-ExecutionPolicy unrestricted" ./set-sound-output.ps1
+                                 ~~~~~~~~~~~~~~~~~~~~~~
Unexpected token './set-sound-output.ps1' in expression or statement.
    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordEx 
   ception
    + FullyQualifiedErrorId : UnexpectedToken
 

Compilation finished at Mon Feb 18 09:52:59

The problem is that powershell needs this strange switch so it will execute (it is a mystery to me why this is not the default).

Can someone help me configure bash so it can use the shebang to start powershell?
Thanks
Siegfried

2

#! lines must have absolute path /*

3

OK, good to know! Thanks. But it still does not work. Any more ideas? I did this from bash:

chmod +x ./hello.ps1
./hello.ps1

and still received this response:

At line:1 char:33

+ "-ExecutionPolicy unrestricted" ./hello.ps1

+                                 ~~~~~~~~~~~

Unexpected token './hello.ps1' in expression or statement.

    + CategoryInfo          : ParserError: (:) [], ParentContainsErrorRecordEx 

   ception

    + FullyQualifiedErrorId : UnexpectedToken

 

hello

Process compilation finished

Here is the source code:

#!c:/Windows/System32/WindowsPowerShell/v1.0/powershell.exe "-ExecutionPolicy unrestricted"
write-host "hello"
4

In Cygwin, "c:\" is "/cygsrive/c/".

5

Thanks again DGPickett! I'm still getting the same error, however.

#!/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe -ExecutionPolicy unrestricted
write-host "hello"

Here is the error:

-ExecutionPolicy : The term '-ExecutionPolicy' is not recognized as the name 

of a cmdlet, function, script file, or operable program. Check the spelling of 

the name, or if a path was included, verify that the path is correct and try 

again.

At line:1 char:1

+ -ExecutionPolicy unrestricted ./hello.ps1

+ ~~~~~~~~~~~~~~~~

    + CategoryInfo          : ObjectNotFound: (-ExecutionPolicy:String) [], Co 

   mmandNotFoundException

    + FullyQualifiedErrorId : CommandNotFoundException


Process compilation finished
6

#! only accepts 1 argument. You can make a bash shell script that calls it.