Powershell.exe Command: Syntax, Parameters and Examples




You may be wondering why write on Powershell.exe Command. Are there special commands for Powershell.exe? Yes! When you begin to script with Powershell you quickly realize that you may need to start Powershell with different options.

This guide covers the general Syntax of the Powershell.exe Command, explains its parameters and conclude with some examples.

Powershell.exe Command Syntax

The syntax of Powershell.exe Command is:

[-EncodedCommand ]
[-ExecutionPolicy ]
[-InputFormat {Text | XML}]
[-OutputFormat {Text | XML}]
[-PSConsoleFile ]
[ -Version <Windows PowerShell version> ]
[-WindowStyle ]<style>
[-File <FilePath> [<Args>]]
[-Command { - | <script-block> [-args <arg-array> ] | <string> [<CommandParameters>] } ]

Powershell.exe Command Parameters

This section explains the parameters of Powershell.exe Command Syntax. See the table below:

1-EncodedCommand <Base64EncodedCommand>Accepts a base-64-encoded string version of a command. This is useful when you need to submit Powershell commands with complex quotation marks or curly braces
2-ExecutionPolicy <ExecutionPolicy>This parameter sets the default execution policy for the current session. The execution policy is saved in the $env:PSExecutionPolicyPreference. This does not modify the execution policy set in the registry.
3-File <FilePath> [<Parameters>]Specifies a script to run. It accepts the scripts parameters.
4-InputFormat {Text | XML}Describes the format of data sent to PowerShell. Valid values are “Text” (text strings) or “XML”
5-MtaStarts PowerShell using a multi-threaded apartment. Multi-threaded apartment (MTA) is the default for PowerShell 2.0. The default in PowerShell 3.0 is single-threaded apartment (STA)
6-StaStarts Windows PowerShell using a single-threaded apartment
7-NoExitIf specified, PowerShell will not exit after execution
8-NoLogoHides the Copyright information that normally displays when PowerShell starts.
9-NonInteractiveExecutes without presenting an interactive prompt to the user
10-NoProfileStarts without loading the Windows PowerShell profile
11-OutputFormatSets the formatting of the output from Windows PowerShell. Valid values are “Text” or “XML”
12-PSConsoleFile <FilePath>Loads the Windows PowerShell console file specified in <FilePath>
13-Version <Windows PowerShell Version>Starts Windows PowerShell with the specified version. Valid values are 2.0 and 3.0.
14-WindowStyle <Window Style>Sets the window style for the session. Valid values are Normal, Minimized, Maximized and Hidden.
15-CommandExecutes the command specified. The value of Command can be “-“, a string. or a script block. Script blocks must be enclosed in braces ({})
16-Help, -?, /?Displays help for PowerShell.exe. You can use PowerShell.exe -Help, PowerShell.exe -? or PowerShell.exe /?

Powershell.exe Command Examples

In this section I will give some Powershell.exe Command examples.

To start Powershell in version 2.0 and not display the copyright information, use the command below:

PowerShell -version 2.0 -NoLogo
 Powershell.exe Command Examples

The result of the last command (shown above), may not mean anything until you start PowerShell.exe without the -NoLogo parameter.

PowerShell -version 2.0

In the previous image, the above command displays the Windows Copyright information. This is because I did not use the -NoLogo parameter.

In another example, if you want to specify the input and output format, use the command below:

PowerShell -InputFormat text -OutputFormat XML

Here is the result in PowerShell:

powershell.exe command

Since I specified input format as text, I can enter text into powershell.exe command. If you press Enter, PowerShell will return to its prompt.

However, if you specify InputFormat as XML and OutputFormat as text, PowerShell command behaves differently.

PowerShell -InputFormat XML -OutputFormat text

See the result of the above command below:

powershell.exe command

PowerShell.exe -Command Parameter Examples

The -Command parameter is the one of the most versatile PowerShell Parameters. The reason is simple. You can run other PowerShell commands with this parameter. You can also run scripts.

The practical application of these these two scenarios will be demonstrated in the next section. In this section, I will demonstrate how to use PowerShell.exe -Command Parameter.

In my first example, I will show how you can run Get-EventLog with the -Command Parameter.

Here is the command:

PowerShell -Command {Get-EventLog -LogName security}
To run the previous command, you MUST open PowerShell as Administrator

Sometimes you may need to write a string that executes a command. In this instance you will need to use an ampersand operator, & followed by the command as shown below:

PowerShell -Command "& {Get-EventLog -LogName security}"
I have had instances where I had to use the ampersand operator, & before a script can run. This may be required when you schedule a PowerShell script with Windows task scheduler.

PowerShell.exe -EncodedCommand Parameter Examples

As I mentioned in the Parameter section of this guide, the -EncodedCommand parameter is used to specify the Base64encoded string version of a command.

In this example, I will show how to run the command, ‘Get-Childitem “c:\program files”‘ in base-64-encoded string.

To convert the command to a base-64-encoded string, use the steps below:

  • Set a variable for the command:
$normalcommand = 'Get-Childitem "c:\program files" '
  • Next, convert the command into bytes as shown below:
$bytes = [System.Text.Encoding]::Unicode.GetBytes($normalcommand)
  • Then convert the bytes to Base64String:
$encodedCommand = [Convert]::ToBase64String($bytes)
  • Finally, run the the command in Base64String:
powershell.exe -encodedCommand $encodedCommand

Here are the results of the commands in PowerShell:

PowerShell.exe -EncodedCommand Parameter Examples

To see what the Base64String string looks like, run the command below:


This is how it looks like in PowerShell.


How to Schedule Powershell Script to Run in Task Scheduler

In the last part of this guide I will demonstrate how to schedule a PowerShell script with task scheduler.

In this example, I will schedule Get-FreeDiskSpace script. This script will run weekly and send you a report of free disk spaces on all servers.

Follow the steps below to schedule Get-FreeDiskSpace PowerShell script:

  • Open PowerShell or command prompt. Then type this command and press Enter.

This will open Task Scheduler.

How to Schedule Powershell Script to Run in Task Scheduler
  • Right-click Task Scheduler and select Create Task.
How to Schedule Powershell Script to Run in Task Scheduler - create scheduled task
  • Give the task a name. You could also enter a description. Then click Triggers tab.
  • To create a new trigger click New.
A trigger is what makes your task run in Task Scheduler.
  • On the New Trigger page, on the Begin the task drop-down ensure that On a schedule is selected. Then select the frequency. If you select Weekly, then check the box beside the day of the week you want your task to run. Finally, configure Advanced settings. Click Ok. Then, on the Create Task page, click Ok again (Second image below).
  • Next, click the Actions tab.
This is where you enter your PowerShell.exe command.
  • On the Actions tab, click New. On the New Action page, beneath program/script, enter the command below:
  • Then beside Add arguments (optional), enter the following
-File C:\PS\Get-FreeDiskSpace.ps1
Your script block must be enclosed in braces ({}) as shown above. You must specify the full path to your script. The path must include the extension .ps1
  • When you finish, click Ok.


PowerShell.exe command is for advanced PowerShell users. I hope I have simplified how to use the various parameters.

If you have any question or comment use the “Leave a Reply” form at the end of the page. You could also share your experience with PowerShell commands.

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