在特定时间自动睡眠和唤醒

如何休眠或睡眠我的Ubuntu 10.10桌面，并在第二天“唤醒”它？

我见过可以在Windows上执行此操作的软件，因此在Ubuntu上不难！

rtcake

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为止。

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

在恢复之前，这会使计算机暂停60秒。重要的参数是：mem 您可以选择几个选项-播放以找到最适合您的值：

          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.

暂停直到已知时间

脚本（位于本文的底部）可用于挂起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

克朗

您可以创建一个根cron作业，调用此脚本在晚上的特定时间执行，然后在早晨清醒：

sudo crontab -e

现在输入类似于在23:30运行悬浮脚本的内容：

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 <redge.online@gmail.com>
# 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!"

NB

mem在脚本的这一部分中更改适合您的任何暂停方法：

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

根据您的硬件时钟使用的是UTC（）还是本地（）时间，您可能还必须用该-u标志代替该-l标志。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。-u-l

归功于redgeonline

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

您可以在这里下载。

#!/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

rtcwake对我的机器没有影响。在华硕主板上，我必须在BIOS中设置唤醒时间。我在“高级”>“ APM”菜单下找到了该设置，即使我的个人时间已设置为美国东部时间，我也不得不使用UTC。