How to backup and restore GPO Win 2k8 r2 using PowerShell commands

It is quite useful sometimes to learn to use command line in Windows, it is fast and work well just like what Linux command line does.

Have a look at the below lines of PowerShell commands to backup and restore GPO in Windows Server 2008 R2:
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###GPO
Import-Module GroupPolicy
Backup-Gpo -Name TestGPO -Path C:\GpoBackups -Comment "Weekly Backup"
Backup-Gpo -GUID fa4a9473-6e2a-4b87-ab78-175e68d97bde -Domain contoso.com -Server DC1 -Path \\Server1\GpoBackups 
Backup-Gpo -All -Path \\Server1\GpoBackups

Restore-GPO -Name "TestGPO" -Path \\Server1\Backups
Restore-GPO -GUID fa4a9473-6e2a-4b87-ab78-175e68d97bde -Path \\Server1\Backups    
Restore-GPO -All -Domain contoso.com -Path \\Server1\Backups