TLDR
Enter a command. For example: xdg desktop menu, ipcmk, adduser.

rtcwake

 
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 +{{15}}min
     
  • 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}}

This is a tldr pages (source, CC BY 4.0) web wrapper for cheat-sheets.org. All commands, popular commands, most used linux commands. Referrals. Progressive Web Application (PWA) version to install on your device.