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Getting Started with Windows PowerShell

7/28/2016

This article helps you gettting started with Windows PowerShell if you found it acting werid. You probably were missing some steps.

PowerShell website

https://msdn.microsoft.com/en-us/powershell

Update PowerShell and help files

check powershell version, you can run

$psversiontable

or

$host

If you are on Windows 7 or 8.1, PowerShell v2.0 is pharpas what you have.

What you need to do, is download and install latest supported Windows Management Framework.

Visit https://msdn.microsoft.com/en-us/powershell and find download WMF button.

As at the time I write this, it would be WMF5.

$psversiontable

Name                           Value
----                           -----
PSVersion                      5.0.10586.117
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.10586.117
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

And then update help files

update-help

P.S. If you tried some common command like unlock-file .\example.ps1 or wget [url], and error reported:

unlock-file : The term 'unlock-file' is not recognized as the name of a cmdlet, function, script file, or operable program.

Chances are, you are running an old version.

Enable script execution

The default execution policy on Windows PowerShell is Restricted.

Use Set-ExecutionPolicy to change the execution policy to AllSigned or RemoteSigned.

Set-ExecutionPolicy -ExecutionPolicy AllSigned

Or, you can unblock a script to run it without changing the execution policy:

unlock-file .\example.ps1
.\example.ps1

An Example

Right now, a book series called You Don't Know JS comes to my interest. And it's avaliable free at github. I want to download it's fist serie (containing 3 chapters) to local disk D:\

You can save the scripts into a *.ps1 file. Or you can type and run these in PS.

for ($i=1; $i -le 3; $i++ )
{
    wget https://raw.githubusercontent.com/getify/You-Dont-Know-JS/master/up%20%26%20going/ch$i.md -o D:\YDKJS_I_ch$i.md
}

Note that this book series is orginally in plain text with markdown syntax marked-up. You might need a markdown reader or someting to read it in good formatting.