Lock entire KM Content for some time.

Hi All,

Here scenario like client wants lock entire Km content for some time .

i know we can lock km folders or documents by

Content Administration ---- > KM Content

Documents---><select the Documents and give LOCK and UNLOCK>

but we have 1000s of folders and documents, so we cant go to each folder or documents to lock.

Is there any possibility to lock entire KM content   at a time.

Thanks,

Prasad.