rtcwake

Enter a system sleep state until specified wakeup time relative to your BIOS clock. More information: <https://manned.org/rtcwake>.

Install

All systems
curl cmd.cat/rtcwake.sh
Debian Debian
apt-get install util-linux
Ubuntu
apt-get install util-linux
Alpine
apk add util-linux
Arch Arch Linux
pacman -S util-linux
image/svg+xml Kali Linux
apt-get install util-linux
CentOS
yum install util-linux
Fedora
dnf install util-linux
Windows (WSL2)
sudo apt-get update sudo apt-get install util-linux
OS X
brew install util-linux
Raspbian
apt-get install util-linux
Docker
docker run cmd.cat/rtcwake rtcwake powered by Commando

Enter a system sleep state until specified wakeup time relative to your BIOS clock. More information: <https://manned.org/rtcwake>.

  • Show whether an alarm is set or not:
    sudo rtcwake -m show -v
  • Suspend to RAM and wakeup after 10 seconds:
    sudo rtcwake -m mem -s 10
  • Suspend to disk (higher power saving) and wakeup 15 minutes later:
    sudo rtcwake -m disk --date +15min
  • Freeze the system (more efficient than suspend-to-RAM but version 3.9 or newer of the Linux kernel is required) and wakeup at a given date and time:
    sudo rtcwake -m freeze --date YYYYMMDDhhmm
  • Disable a previously set alarm:
    sudo rtcwake -m disable
  • Perform a dry run to wakeup the computer at a given time. (Press Ctrl + C to abort):
    sudo rtcwake -m on --date hh:ss

© tl;dr; authors and contributors