On Sat, Apr 4, 2009 at 4:31 PM, Timothy Murphy <gayleard at eircom.net> wrote: > Has anyone experience with WOL under Centos (5.3).? > If so, how exactly do you put the machine to sleep, > and how exactly do you wake it up remotely? Put the machine in a suspend to ram state using acpi: echo -n mem > /sys/power/state you can use disk instead of mem Machine should go down real quick - if you've got services / devices running that aren't compatible with suspend, it may wake up right away. This "works for me" under Fedora 10, no idea about how it would work under Centos 5.3 - but it appears the interface is there regardless. I had to unmount nfs directories and unload my network driver before the system would stay asleep. if you put the sleep command in a script, when the OS wakes, it will continue executing the script, making it easy to resume services / devices that needed to be discontinued prior to sleeping. -Gordon