Get-QADGroupMember命令是Quest Active Directory的命令，必须安装如下包才能使用！
电脑路径：
D:softADQuest_Quest-One-ActiveRoles-Management-Shell-for-Active-Directory-x64_160
下载路径：
http://www.quest.com/powershell/activeroles-server.aspx.
安装完成后，需要add the snapin to your PowerShell session
或者add it to your PowerShell profile script like this:
Add-PSSnapin Quest.ActiveRoles.ADManagement
Add-PSSnapin Quest.ActiveRoles.ADManagement -ErrorAction Stop
如何创建PowerShell profiles？
打开Powershell
test-path $profile
此时可以得到Powershell Profile的路径，一个Profile是当powershell运行时一同运行的
new-item -path $profile -itemtype file -force
notepad $profile
此时打开
This will open your personal PowerShell launch profile. This is where you can add the Quest AD tools to open with your native PowerShell. Add the following to the .ps1 file and save.
add-pssnapin quest.activeroles.admanagement
Now close out of PowerShell and open again, you should now have the Quest AD snap-ins in your PowerShell. To test, run
get-pssnapins
Now if you really want to get fancy and allow all your PowerShell tools to load these snappins you can remove the add-psssnapin from your profile above and add it to the systems profile. To do this open up PowerShell and run this line.
new-item -path $env:windirSystem32WindowsPowerShellv1.0profile.ps1 -itemtype file -force
This will create a system profile, this will launch for anyone and for any interface on that system. Now edit the newly created .ps1 file in the SYS32 location above with
add-pssnapin quest.activeroles.admanagement
You’re now good to go. These AD Quest tools are great, no more long WMI scripts with these. Enjoy!