Suspend and wake up in one command
# rtcwake -d /dev/rtc0 -s 30 -m mem
Source: https://community.arm.com/developer/tools-software/oss-platforms/w/docs/239/system-suspend-to-ram
# rtcwake -d /dev/rtc0 -s 30 -m mem
Source: https://community.arm.com/developer/tools-software/oss-platforms/w/docs/239/system-suspend-to-ram