{ "content": [ { "type": "text", "text": "# RTCWAKE (man)\n\n## NAME\n\nrtcwake - enter a system sleep state until specified wakeup time\n\n## SYNOPSIS\n\nrtcwake [options] [-d device] [-m standbymode] {-s seconds|-t timet}\n\n## DESCRIPTION\n\nThis program is used to enter a system sleep state and to automatically wake from it at a\nspecified time.\n\n## TLDR\n\n> Enter a system sleep state until specified wakeup time relative to your BIOS clock.\n\n- Show whether an alarm is set or not:\n `sudo rtcwake {{-m|--mode}} show {{-v|--verbose}}`\n- Suspend to RAM and wakeup after 10 seconds:\n `sudo rtcwake {{-m|--mode}} mem {{-s|--seconds}} {{10}}`\n- Suspend to disk (higher power saving) and wakeup 15 minutes later:\n `sudo rtcwake {{-m|--mode}} disk --date +{{15}}min`\n- 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:\n `sudo rtcwake {{-m|--mode}} freeze --date {{YYYYMMDDhhmm}}`\n- Disable a previously set alarm:\n `sudo rtcwake {{-m|--mode}} disable`\n- Perform a dry run to wakeup the computer at a given time. (Press `` to abort):\n `sudo rtcwake {{-m|--mode}} on --date {{hh:ss}}`\n\n*Source: tldr-pages*\n\n## Sections\n\n- **NAME**\n- **SYNOPSIS**\n- **DESCRIPTION**\n- **OPTIONS** (13 subsections)\n- **NOTES**\n- **FILES**\n- **HISTORY**\n- **AUTHORS**\n- **COPYRIGHT**\n- **SEE ALSO**\n- **REPORTING BUGS**\n- **AVAILABILITY**\n\nUse structuredContent.sections for detailed options, examples, and full documentation.\n" } ], "structuredContent": { "command": "RTCWAKE", "section": "", "mode": "man", "summary": "rtcwake - enter a system sleep state until specified wakeup time", "synopsis": "rtcwake [options] [-d device] [-m standbymode] {-s seconds|-t timet}", "tldr_summary": "Enter a system sleep state until specified wakeup time relative to your BIOS clock.", "tldr_examples": [ { "description": "Show whether an alarm is set or not", "command": "sudo rtcwake {{-m|--mode}} show {{-v|--verbose}}" }, { "description": "Suspend to RAM and wakeup after 10 seconds", "command": "sudo rtcwake {{-m|--mode}} mem {{-s|--seconds}} {{10}}" }, { "description": "Suspend to disk (higher power saving) and wakeup 15 minutes later", "command": "sudo rtcwake {{-m|--mode}} disk --date +{{15}}min" }, { "description": "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", "command": "sudo rtcwake {{-m|--mode}} freeze --date {{YYYYMMDDhhmm}}" }, { "description": "Disable a previously set alarm", "command": "sudo rtcwake {{-m|--mode}} disable" }, { "description": "Perform a dry run to wakeup the computer at a given time. (Press `` to abort)", "command": "sudo rtcwake {{-m|--mode}} on --date {{hh:ss}}" } ], "tldr_source": "official", "flags": [ { "flag": "-A", "long": "--adjfile", "arg": null, "description": "Specify an alternative path to the adjust file." }, { "flag": "-a", "long": "--auto", "arg": null, "description": "Read the clock mode (whether the hardware clock is set to UTC or local time) from the adjtime file, where hwclock(8) stores that information. This is the default. --date timestamp Set the wakeup time to the value of the timestamp. Format of the timestamp can be any of the following: ┌────────────────────┬────────────────────────────────┐ │ │ │ │YYYYMMDDhhmmss │ │ ├────────────────────┼────────────────────────────────┤ │ │ │ │YYYY-MM-DD hh:mm:ss │ │ ├────────────────────┼────────────────────────────────┤ │ │ │ │YYYY-MM-DD hh:mm │ (seconds will be set to 00) │ ├────────────────────┼────────────────────────────────┤ │ │ │ │YYYY-MM-DD │ (time will be set to 00:00:00) │ ├────────────────────┼────────────────────────────────┤ │ │ │ │hh:mm:ss │ (date will be set to today) │ ├────────────────────┼────────────────────────────────┤ │ │ │ │hh:mm │ (date will be set to today, │ │ │ seconds to 00) │ ├────────────────────┼────────────────────────────────┤ │ │ │ │tomorrow │ (time is set to 00:00:00) │ ├────────────────────┼────────────────────────────────┤ │ │ │ │+5min │ │ └────────────────────┴────────────────────────────────┘" }, { "flag": "-d", "long": "--device", "arg": null, "description": "Use the specified device instead of rtc0 as realtime clock. This option is only relevant if your system has more than one RTC. You may specify rtc1, rtc2, ... here." }, { "flag": "-l", "long": "--local", "arg": null, "description": "Assume that the hardware clock is set to local time, regardless of the contents of the adjtime file." }, { "flag": "", "long": "--list-modes", "arg": null, "description": "List available --mode option arguments." }, { "flag": "-m", "long": "--mode", "arg": null, "description": "Go into the given standby state. Valid values for mode are: standby ACPI state S1. This state offers minimal, though real, power savings, while providing a very low-latency transition back to a working system. This is the default mode. freeze The processes are frozen, all the devices are suspended and all the processors idled. This state is a general state that does not need any platform-specific support, but it saves less power than Suspend-to-RAM, because the system is still in a running state. (Available since Linux 3.9.) mem ACPI state S3 (Suspend-to-RAM). This state offers significant power savings as everything in the system is put into a low-power state, except for memory, which is placed in self-refresh mode to retain its contents. disk ACPI state S4 (Suspend-to-disk). This state offers the greatest power savings, and can be used even in the absence of low-level platform support for power management. This state operates similarly to Suspend-to-RAM, but includes a final step of writing memory contents to disk. off ACPI state S5 (Poweroff). This is done by calling '/sbin/shutdown'. Not officially supported by ACPI, but it usually works. no Don’t suspend, only set the RTC wakeup time. on Don’t suspend, but read the RTC device until an alarm time appears. This mode is useful for debugging. disable Disable a previously set alarm. show Print alarm information in format: \"alarm: off|on