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#!/usr/bin/bash
# This is a script to disable all wakeup triggers but the power button (PWRB)
# Based on the workaround provided for the problem described on Arch Wiki
# https://wiki.archlinux.org/index.php/Power_management/Suspend_and_hibernate#Instantaneous_wakeups_from_suspend
#
# @author Sávio Carlos Martins Costa (saviocmc at protonmail dot com)
# Sets the character of separation to be the new line \n (the default is a space)
IFS=$'\n'
WAKEUP=/proc/acpi/wakeup
CONFIG=/etc/wakeup-triggers.conf
BACKUP=/tmp/wakeup-triggers
backupAndDisableAllCurrentTriggers() {
enabledTriggers=($(cat $WAKEUP | grep "enable"))
for trigger in "${enabledTriggers[@]}"; do
triggerCode=${trigger:0:4}
echo $triggerCode >> $BACKUP
echo $triggerCode > $WAKEUP
done
}
enableSelectedTriggers() {
selectedTriggers=($(cat $CONFIG | grep --invert-match '#' ))
for trigger in "${selectedTriggers[@]}"; do
echo $trigger > $WAKEUP
done
}
restoreBackup() {
enabledTriggers=($(cat $WAKEUP | grep "enable"))
for trigger in "${enabledTriggers[@]}"; do
triggerCode=${trigger:0:4}
echo $triggerCode > $WAKEUP
done
backupTriggers=($(cat $BACKUP))
for trigger in "${backupTriggers[@]}"; do
echo $trigger > $WAKEUP
done
rm $BACKUP
}
start() {
backupAndDisableAllCurrentTriggers
enableSelectedTriggers
exit 0
}
stop () {
restoreBackup
exit 0
}
case "$1" in
"start") start;;
"stop") stop;;
*) exit 1;;
esac
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