If you want to script out the linked server definitions, here is a powershell script that will accomplish this.

Add-PSSnapin SqlServerProviderSnapin100

Add-PSSnapin SqlServerCmdletSnapin100

$server="<servername>"

$scriptpath="<path of script file>"

cd SQLSERVER:\SQL\$server\DEFAULT\LinkedServers

$Scripter=new-object ("Microsoft.SqlServer.Management.Smo.Scripter") ($server)

$Scripter.Options.DriAll=$True

$Scripter.Options.IncludeHeaders=$True

$Scripter.Options.ToFileOnly=$True

$Scripter.Options.WithDependencies=$False

foreach ($Item in Get-ChildItem) {

$filename = $Item.ToString()

$filename = $filename.Replace("\","_")

$Scripter.Options.FileName=$scriptpath+$filename + ".sql"

$Scripter.Options.AppendToFile=$False

$Scripter.Options.ScriptDrops=$True;

$Scripter.Options.IncludeIfNotExists=$True;

$Scripter.Script($Item)

$Scripter.Options.ScriptDrops=$False;

$Scripter.Options.IncludeIfNotExists=$False;

$Scripter.Options.AppendToFile=$True

$Scripter.Script($Item)

}