如何暂时禁止暂停？

Question

如何暂时禁止暂停？

Zor*_*orn 10 command-line suspend automatic

我为此搜索了一些，似乎找不到任何有用的东西。

我将运行 Ubuntu 12.10 的 PC 设置为在闲置 30 分钟后暂停。我不想改变它，它在大多数情况下都很好用。

如果特定应用程序正在运行，我想要做的是禁用自动挂起。我怎样才能做到这一点？

到目前为止，我发现的最接近的事情是添加一个 shell 脚本，/usr/lib/pm-utils/sleep.d其中检查应用程序是否正在运行并返回 1 以指示应阻止挂起。但看起来系统随后放弃了自动挂起，而不是再过 30 分钟后再次尝试。（据我所知，如果我移动鼠标，会再次重新启动计时器。）应用程序很可能会在几个小时后完成，如果我不使用，我宁愿我的 PC 自动挂起就在那个时候。（所以我不想在应用程序完成时添加对 pm-suspend 的调用。）

这可能吗？

编辑：正如我在下面的评论之一中指出的那样，我真正想要的是在我的 PC 通过 NFS 提供文件时禁止挂起；我只想关注问题的“挂起”部分，因为我已经知道如何解决 NFS 部分。使用其中一个答案中给出的“xdotool”想法，我想出了以下脚本，我每隔几分钟从 cron 运行一次。这并不理想，因为它也阻止了屏幕保护程序的启动，但它确实有效。我需要看看为什么“咖啡因”稍后不能正确地重新启用挂起，然后我可能会做得更好。无论如何，这似乎确实有效，所以我将它包括在这里以防其他人感兴趣。

#!/bin/bash

# If the output of this function changes between two successive runs of this
# script, we inhibit auto-suspend.
function check_activity()
{
    /usr/sbin/nfsstat --server --list
}

# Prevent the automatic suspend from kicking in. 
function inhibit_suspend()
{
    # Slightly jiggle the mouse pointer about; we do a small step and
    # reverse step to try to stop this being annoying to anyone using the
    # PC. TODO: This isn't ideal, apart from being a bit hacky it stops
    # the screensaver kicking in as well, when all we want is to stop
    # the PC suspending. Can 'caffeine' help?
    export DISPLAY=:0.0
    xdotool mousemove_relative --sync --  1  1
    xdotool mousemove_relative --sync -- -1 -1
}

LOG="$HOME/log/nfs-suspend-blocker.log"
ACTIVITYFILE1="$HOME/tmp/nfs-suspend-blocker.current"
ACTIVITYFILE2="$HOME/tmp/nfs-suspend-blocker.previous"

echo "Started run at $(date)" >> "$LOG"
if [ ! -f "$ACTIVITYFILE1" ]; then
    check_activity > "$ACTIVITYFILE1"
    exit 0;
fi

/bin/mv "$ACTIVITYFILE1" "$ACTIVITYFILE2"
check_activity > "$ACTIVITYFILE1"

if cmp --quiet "$ACTIVITYFILE1" "$ACTIVITYFILE2"; then
    echo "No activity detected since last run" >> "$LOG"
else
    echo "Activity detected since last run; inhibiting suspend" >> "$LOG"
    inhibit_suspend
fi

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编辑 2：上面的脚本有效，但由于下面的另一条评论，我现在正在使用这对脚本，它们的优点是允许屏幕保护程序在我禁止挂起时启动。第一个是 /usr/lib/pm-utils/sleep.d/000nfs-inhibit，如果存在禁止文件，它将阻止挂起尝试：

#!/bin/sh

LOG="/home/zorn/log/nfs-suspend-blocker.log"
INHIBITFILE="/home/zorn/tmp/nfs-suspend-blocker.inhibit"

echo "$0: Started run at $(date), arguments: $*" >> "$LOG"
if [ "$1" = "suspend" ] && [ -f "$INHIBITFILE" ]; then
    echo "$0: Inhibiting suspend" >> "$LOG"
    exit 1
fi
exit 0

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第二个是先前 nfs-suspend-blocker 脚本的修改版本，仍应从 cron 运行。它现在遵循以下评论中概述的策略：

#!/bin/bash

# This works in tandem with /usr/lib/pm-utils/sleep.d/000nfs-inhibit, which
# will prevent a suspend occurring if $INHIBITFILE is present. Once it prevents
# a suspend, it appears that it requires some "user activity" to restart the
# timer which will cause a subsequent suspend attempt, so in addition to
# creating or removing $INHIBITFILE this script also jiggles the mouse after
# removing the file to restart the timer.

# If the output of this function changes between two successive runs of this
# script, we inhibit auto-suspend.
function check_activity()
{
    /usr/sbin/nfsstat --server --list
}

# Slightly jiggle the mouse pointer about; we do a small step and reverse step
# to try to stop this being annoying to anyone using the PC.
function jiggle_mouse()
{
    export DISPLAY=:0.0
    xdotool mousemove_relative --sync --  1  1
    xdotool mousemove_relative --sync -- -1 -1
}

LOG="$HOME/log/nfs-suspend-blocker.log"
ACTIVITYFILE1="$HOME/tmp/nfs-suspend-blocker.current"
ACTIVITYFILE2="$HOME/tmp/nfs-suspend-blocker.previous"
INHIBITFILE="$HOME/tmp/nfs-suspend-blocker.inhibit"

echo "$0: Started run at $(date)" >> "$LOG"
if [ ! -f "$ACTIVITYFILE1" ]; then
    check_activity > "$ACTIVITYFILE1"
    exit 0;
fi

/bin/mv "$ACTIVITYFILE1" "$ACTIVITYFILE2"
check_activity > "$ACTIVITYFILE1"

if cmp --quiet "$ACTIVITYFILE1" "$ACTIVITYFILE2"; then
    echo "$0: No activity detected since last run" >> "$LOG"
    if [ -f "$INHIBITFILE" ]; then
            echo "$0: Removing suspend inhibit file and jiggling mouse" >> "$LOG"
            /bin/rm "$INHIBITFILE"
            jiggle_mouse
    fi
else
    echo "$0: Activity detected since last run; inhibiting suspend" >> "$LOG"
    touch "$INHIBITFILE"
fi

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