Turn screen off on Ubuntu [from console]

ubuntu_logo_81x81A good way to save power is to turn the screen off when you can to leave the system by itself for sometime. Unlike my old laptop my new laptop doesn’t have a dedicated key to do that. An easy way to achieve this is to run the following command:

$ perl -e 'select(undef,undef,undef,.1)' && xset dpms force off

Assign a keyboard shortcut for it on Unity and you can easily turn off the monitor even if you don’t have a dedicated key. You can set it in the following file on LXDE:
~/.config/openbox/lxde-rc.xml

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