Can a Ubuntu (or any other distro) wake up from standby/hibernate at a preset time?
I actually don't want the PC to consume 200W all the time for just doing something every hour.
rtcwake is a standard Linux command that enters a standby or sleep state until the specified time. It depends on BIOS support; most current PCs do support it. You can specify either a sleep duration (in seconds) or a wake up date (in seconds since the epoch, as produced by
rtcwake -s 3600 rtcwake -t $(date +%s 'now + 1 hour')