Disabling sleep mod when closing MacBook lid

I was wondering if anyone knows a way to disable sleep mode when closing the lid of my MacBook?

Basically I'm going to be intermittently connecting it to my LCD TV and was going to lay it on a shelf in my TV stand during that time.

I found this Terminal command online and was wondering if anyone knows if it would work and be safe?

******************************************************************************

Open up Terminal and type:

sudo pmset -a lidwake 0

This will disable the sleep/wake feature when opening or closing the lid.

To reenable it, type:

sudo pmset -a lidwake 1

To check the status of the lid wake feature type:

pmset -g

And look for the lidwake value.
0 = Disables
1 = Enabled

******************************************************************************

Kind regards,

Mark