Trying to get teh ondemand power governor to work

[Jamie Dobbs]

If I wasn't on a system using sudo I'd simply su - to reoot and enter the
command:

echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

How can i do similar on Ubuntu? I've tried

sudo "echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor"

but that just returns an error (which unfortunately I cannot recall at the
moment and I'm not near my Ubuntu box).

Can someone point me in the right direction as I know I should be able to
do it but for sime reason my brain just can't work out how!!

Thank

jamie