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在特定时间自动休眠和唤醒

tag-icon • tag-icon hibernate sleep
在特定时间自动休眠和唤醒

如何使我的 Ubuntu 10.10 桌面休眠或睡眠并让其在第二天“唤醒”？

我见过可以在 Windows 上做到这一点的软件，因此在 Ubuntu 上做到这一点并不难！

答案1

唤醒

您感兴趣的命令是rtcwake：

该程序用于进入系统睡眠状态，直到指定的唤醒时间。

测试

要找到适合您的正确语法，请尝试以下操作：

sudo rtcwake -u -s 60 -m mem

这应该会使计算机暂停 60 秒，然后再恢复。重要的参数是mem 您可以选择多个选项 - 尝试找到最适合您的值：

          standby
                 ACPI state S1. This state offers  minimal,  though  real,
                 power savings, while providing a very low-latency transi‐
                 tion back to a working system. This is the default mode.

          mem    ACPI state S3 (Suspend-to-RAM). This state offers signif‐
                 icant  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 manage‐
                 ment. 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
                 usually working.

          no     Don't suspend. The rtcwake command sets RTC  wakeup  time
                 only.

          on     Don't  suspend,  but  read  RTC  device  until alarm time
                 appears. This mode is useful for debugging.

暂停至已知时间

可以使用脚本（位于本文底部）来暂停计算机并在特定时间唤醒：

语法suspend_until [hh:mm]例如

sudo ./suspend_until 07:30

将脚本另存为名称suspend_until并赋予其执行权限，即

chmod +x suspend_until

克罗恩

您可以创建一个 root cron 作业，调用此脚本在晚上的特定时间执行，然后在早上醒来：

sudo crontab -e

现在输入类似的内容在 23:30 运行暂停脚本：

30 23 * * * /home/myhomefolder/suspend_until 07:30

suspend_until 脚本

#!/bin/bash

# Auto suspend and wake-up script
#
# Puts the computer on standby and automatically wakes it up at specified time
#
# Written by Romke van der Meulen <[email protected]>
# Minor mods fossfreedom for AskUbuntu
#
# Takes a 24hour time HH:MM as its argument
# Example:
# suspend_until 9:30
# suspend_until 18:45

# ------------------------------------------------------
# Argument check
if [ $# -lt 1 ]; then
    echo "Usage: suspend_until HH:MM"
    exit
fi

# Check whether specified time today or tomorrow
DESIRED=$((`date +%s -d "$1"`))
NOW=$((`date +%s`))
if [ $DESIRED -lt $NOW ]; then
    DESIRED=$((`date +%s -d "$1"` + 24*60*60))
fi

# Kill rtcwake if already running
sudo killall rtcwake

# Set RTC wakeup time
# N.B. change "mem" for the suspend option
# find this by "man rtcwake"
sudo rtcwake -l -m mem -t $DESIRED &

# feedback
echo "Suspending..."

# give rtcwake some time to make its stuff
sleep 2

# then suspend
# N.B. dont usually require this bit
#sudo pm-suspend

# Any commands you want to launch after wakeup can be placed here
# Remember: sudo may have expired by now

# Wake up with monitor enabled N.B. change "on" for "off" if 
# you want the monitor to be disabled on wake
xset dpms force on

# and a fresh console
clear
echo "Good morning!"

注意：

将脚本的这一部分更改mem为适合您的任何暂停方法：

# Set RTC wakeup time
sudo rtcwake -l -m mem -t $DESIRED &

您可能还必须用-u标志替换 标志，-l具体取决于您的硬件时钟使用的是 UTC ( -u) 还是本地 ( -l) 时间。请注意，您的硬件时钟与您在操作系统中看到的系统时钟不同。

归功于红极在线

答案2

使用 rtcwake，我创建了一个简单的 bash 脚本。它使用 php 将自然语言转换为系统时间。例如：

  • sudo ./cu "tomorrow 9am"

  • sudo ./cu "next monday 3pm"

  • sudo ./cu "1 hour ago"

    rtcwake: time doesn't go backward

你可以在这里下载。

#!/bin/bash
export sdate=$1

date=`/usr/bin/php << 'EOF'
<?php
date_default_timezone_set("Etc/GMT-2");
$date = strtotime(GETENV("sdate"));
echo "\r".$date;
EOF`

rtcwake -m mem -t $date

答案3

rtcwake对我的机器没有影响。在我的华硕主板上，我必须在 BIOS 中设置唤醒时间。我在高级 > APM 菜单下找到了设置，尽管我的 BIOS 时间设置为美国东部时间，但我必须使用 UTC。

答案4

对于其他最终在这个问题上寻找如何在一定时间后简单地挂起/休眠（而不是自动唤醒）的人来说，这似乎在 ubuntu 22.04 上有效

sleep 3600 && systemctl suspend

其中 3600 是暂停之前等待的秒数。

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