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John Dale
Asked: 2020-12-24 10:28:28 +0800 CST

What is the problem with my systemd script?

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It works fine, but the notify-send is put "backwards" before other notifications, here's: an image:

picture

It feels like my notification is in a different "group" or something...

The notification should come AFTER the mullvad notification.

service script:

[Unit]
Description=Turns off microphone at startup
#After=multi-user.target
After=syslog.target

[Service]
ExecStart=/opt/bin/microphone-status
User=tom
RemainAfterExit=yes
Environment="DISPLAY=:0.0" "XAUTHORITY=/home/tom/.Xauthority"

[Install]
WantedBy=multi-user.target

The script:

#!/bin/bash
sleep 10
#/usr/bin/update-notifier
/usr/bin/notify-send -u normal 'Why does it appear on top?'
#function check_state () {
#   toggle_toggle=$(/usr/bin/amixer get Capture | grep -c "\[off\]")
#   echo toggle+percent
#   toggle_percent=$(/usr/bin/amixer get Capture | grep -c "\[0%\]")
#   echo toggle_percent
#   let toggle_result=$((toggle_toggle+toggle_percent))
#   echo $((toggle_result))
#}
#check_state
#/usr/bin/notify-send -u normal $toggle_result # IF 4  = TURNED OFF, IF !=4 TURNED ON

#if [ $(/usr/bin/pgrep pavucontrol) > 0 ] ; then  # Check if pavucontrol has processID = active
#echo "found pavucontrol"
#   if [ $((toggle_result)) != 4 ] ; then # Turn off microphone once
#       toggle off
#           /usr/bin/killall -9 xfce4-notifyd
#           /usr/bin/notify-send 'Microphone was left turned on' 'It was automatically disabled.'
#       /usr/bin/amixer set Capture toggle
#           /usr/bin/amixer set Capture 0
#           /usr/bin/amixer set Capture 0%
#   fi
#fi

exit 0

Another picture - the notification starts at a really weird place - at half at my taskbar

Why is my service's notification at such a weird place?

bash

1 Answers

  1. cat /lib/systemd/system/alsa-volume-default.service

    [Unit]
Description=Alsa volume default servivce.
 After=alsa-restore.service
PartOf=alsa-restore.service

[Service]
ExecStart=/opt/bin/alsa-controls.sh init

[Install]
WantedBy=alsa-restore.service

    cat /home/bac0n/.config/autostart/alsa-controls.desktop

    [Desktop Entry]
Comment=Alsa volume notify
Exec=/bin/bash -c "/opt/bin/alsa-controls.sh check; sudo -n /opt/bin/alsa-controls.sh reset"
GenericName=Alsa Volume Notify
Name=AlsaControls
StartupNotify=false
Terminal=false
Type=Application

    cat /etc/sudoers.d/alsa-controls

    Cmnd_Alias CMDS = /opt/bin/alsa-controls.sh reset
User_Alias CMDUSERS = bac0n
CMDUSERS ALL=(ALL) NOPASSWD: CMDS
Defaults!CMDS env_keep += DBUS_SESSION_BUS_ADDRESS

    cat /opt/bin/alsa-controls.sh

    #!/bin/bash

file=/var/lib/alsa-controls/state

# alsa-volume-default.service
init(){
    local left right state

    read -d '' -r left right < <( \
    amixer sget DAC,0 | \
    sed -nr 's/Front .* \[([0-9]+)%\]$/\1/p')

    mkdir -p ${file%/*} || exit 1

    # 0 = unchanged, 1 = changed
    [[ $left -eq $right \
    && $left -eq 5 ]]; state=$?
    amixer -q sset DAC,0 5% && echo $state > $file
}

# Autostart as unprivileged.
check(){
    read -r -N 1 < $file || exit
    [[ $REPLY = +([1-9]) ]] && \
    notify-send -t 0 -u normal "alsa notify" "Alsa volume has been altered."
}

# Autostart as root (sudo).
reset(){
    [[ $EUID -eq 0 ]] \
    && echo 0 > $file
}

[[ $1 = @(init|check|reset) ]] && $1

exit 0
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