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Links a GPO to a site, domain, or OU. Windows Server PowerShell reference
From the Windows Server PowerShell reference 10 parameters Its page in the reference
Parameters
-Confirm, -cfPrompts you for confirmation before running the cmdlet.-Domain, -DomainNameSpecifies the domain for this cmdlet.-EnforcedSpecifies whether the GPO link is enforced.-Guid, -IDSpecifies the GPO to link by its globally unique identifier (GUID).-LinkEnabledSpecifies whether the GPO link is enabled.-Name, -DisplayNameSpecifies the GPO to link by its display name.-OrderSpecifies the link order for the GPO link.-Server, -DCSpecifies the name of the domain controller that this cmdlet contacts to complete the operation.-TargetSpecifies the LDAP distinguished name of the site, domain, or OU to which to link the GPO.-WhatIf, -wiShows what would happen if the cmdlet runs.