CmdID

CmdID / Commands

rtcwake

Enter the given sleep state until the given time. toybox

On Linux

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Linux

from the toybox, 0BSD

Enter the given sleep state until the given time. standby S1: default mem S3: suspend to RAM disk S4: suspend to disk off S5: power off disable Cancel current alarm freeze stop processes/processors no just set wakeup time on just poll RTC for alarm show just show current alarm

rtcwake [-aluv] [-d FILE] [-m MODE] [-s SECS] [-t UNIX]
-aRTC uses time specified in /etc/adjtime
-d FILEDevice to use (default /dev/rtc)
-lRTC uses local time
-m MODEMode (--list-modes to see those supported by your kernel):
-s SECSWake SECS seconds from now
-t UNIXWake UNIX seconds from epoch
-uRTC uses UTC
-vVerbose

Linux

from tldr-pages, CC BY 4.0

Enter a system sleep state until specified wakeup time relative to your BIOS clock.

Show whether an alarm is set or not

sudo rtcwake --mode show --verboseIdentify

Suspend to RAM and wake up after 10 seconds

sudo rtcwake --mode mem --seconds 10Identify

Suspend to disk (higher power saving) and wake up 15 minutes later

sudo rtcwake --mode disk --date +15minIdentify

Freeze the system (more efficient than suspend-to-RAM but version 3.9 or newer of the Linux kernel is required) and wake up at a given date and time

sudo rtcwake --mode freeze --date YYYYMMDDhhmmIdentify

Disable a previously set alarm

sudo rtcwake --mode disableIdentify

Simulate waking up the computer at a given time. (Press <Ctrl c> to abort)

sudo rtcwake --mode on --date hh:ssIdentify