Powershell Extracting Zip

When I run this command in a normal PowerShell window it works fine:

Add-Type -AssemblyName System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory("c:/program/compressed.zip","c:/program")

However when I run it as:

powershell Add-Type -AssemblyName System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory("c:/program/compressed.zip","c:/program")

or

cmd /c powershell Add-Type -AssemblyName System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory("c:/program/compressed.zip","c:/program")

I get this error:

At line:1 char:119
+ ... System.IO.Compression.ZipFile]::ExtractToDirectory(c:/program/compressed.z ... ~
You must provide a value expression following the '/' operator.
At line:1 char:119
+ ... System.IO.Compression.ZipFile]::ExtractToDirectory(c:/program/compressed.z ... ~
Missing ')' in method call.
At line:1 char:119
+ ... Compression.ZipFile]::ExtractToDirectory(c:/program/compressed.zip,c:/progr ... ~~~~~~~~~~
Unexpected token 'compressed.zip' in expression or statement.

How can I make it work when adding PowerShell in front?

Thank you for your time.

1

1 Answer

Command Prompt (batch) processes the command and arguments first, so be careful with anything that could be interpreted as cmd symbols (double-quotes in your case), since cmd will remove them.

When running powershell commands, I prefer quoting the actual powershell part:

powershell.exe -Command "Add-Type -AssemblyName System.IO.Compression.FileSystem; [System.IO.Compression.ZipFile]::ExtractToDirectory('c:/program/compressed.zip','c:/program')"

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