如何得知当前机器上安装的PowerShell是什么版本的?

$PSVersionTable.PSVersion

 

参考资料

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http://stackoverflow.com/questions/1825585/determine-installed-powershell-version

http://blogs.technet.com/b/heyscriptingguy/archive/2014/10/13/powertip-check-version-of-powershell.aspx