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PowerShell.exe Console Help

Updated: May 19, 2011

Applies To: Windows PowerShell 2.0

Starts Windows PowerShell from the command line of another tool, such as Cmd.exe.

Syntax

PowerShell[.exe]
       [-EncodedCommand <Base64EncodedCommand>]
       [-ExecutionPolicy <ExecutionPolicy>]
       [-InputFormat {Text | XML}] 
       [-NoExit]
       [-NoLogo]
       [-NonInteractive] 
       [-NoProfile] 
       [-OutputFormat {Text | XML}] 
       [-PSConsoleFile <file> | -Version <version>]
       [-Sta]
       [-WindowStyle <style>]
       [-File <filePath> <args>]
       [-Command { - | <script-block> [-args <arg-array>]
                     | <string> [<CommandParameters>] } ]

PowerShell[.exe] -Help | -? | /?

Parameters

-EncodedCommand

Accepts a base-64-encoded string version of a command. Use this parameter to submit commands to Windows PowerShell that require complex quotation marks or curly braces.

-ExecutionPolicy

Sets the default execution policy for the current session and saves it in the $env:PSExecutionPolicyPreference environment variable. This parameter does not change the Windows PowerShell execution policy that is set in the registry.

-File

Runs the specified script in the local scope ("dot-sourced"), so that the functions and variables that the script creates are available in the current session. Enter the script file path and any parameters. File must be the last parameter in the command, because all characters typed after the File parameter name are interpreted as the script file path followed by the script parameters.

-InputFormat

Describes the format of data sent to Windows PowerShell. Valid values are "Text" (text strings) or "XML" (serialized CLIXML format).

-NoExit

Does not exit after running startup commands.

-NoLogo

Hides the copyright banner at startup.

-NonInteractive

Does not present an interactive prompt to the user.

-NoProfile

Does not load the Windows PowerShell profile.

-OutputFormat

Determines how output from Windows PowerShell is formatted. Valid values are "Text" (text strings) or "XML" (serialized CLIXML format).

-PSConsoleFile

Loads the specified Windows PowerShell console file. To create a console file, use the Export-Console cmdlet in Windows PowerShell.

-Sta

Starts the shell using a single-threaded apartment. Multi-threaded apartment (MTA) is the default.

-Version

Starts the specified version of Windows PowerShell. Enter a version number with the parameter, such as "-version 1.0".

-WindowStyle

Sets the window style to Normal, Minimized, Maximized or Hidden.

-Command

Executes the specified commands (and any parameters) as though they were typed at the Windows PowerShell command prompt, and then exits, unless NoExit is specified. The value of Command can be "-", a string. or a script block.

If the value of Command is "-", the command text is read from standard input.

Script blocks must be enclosed in braces ({}). You can specify a script block only when running PowerShell.exe in Windows PowerShell. The results of the script are returned to the parent shell as deserialized XML objects, not live objects.

If the value of Command is a string, Command must be the last parameter in the command , because any characters typed after the command are interpreted as the command arguments.

To write a string that runs a Windows PowerShell command, use the format:

"& {<command>}"

where the quotation marks indicate a string and the invoke operator (&) causes the command to be executed.

-Help, -?, /?

Shows this message. If you are typing a PowerShell.exe command in Windows PowerShell, prepend the command parameters with a hyphen (-), not a forward slash (/). You can use either a hyphen or forward slash in Cmd.exe.

EXAMPLES

PowerShell -PSConsoleFile sqlsnapin.psc1

PowerShell -version 1.0 -NoLogo -InputFormat text -OutputFormat XML

PowerShell -Command {Get-EventLog -LogName security}

PowerShell -Command "& {Get-EventLog -LogName security}"

# To use the -EncodedCommand parameter:
$command = "dir 'c:\program files' "
$bytes = [System.Text.Encoding]::Unicode.GetBytes($command)
$encodedCommand = [Convert]::ToBase64String($bytes)
powershell.exe -encodedCommand $encodedCommand
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