Tiny daemon that listens for net.nuetzlich.SystemNotifications.Notify
signals on the D-Bus system bus and shows them as
desktop notifications
using the user bus. Works on Linux with Gnome, Cinnamon, KDE, LXQT, ...
See rfjakob/earlyoom#183 for the raison d'être.
Just run
make
If you want systembus-notify to automatically start when you log in,
also run (no sudo required):
make install
Just run
make test
You should see "systembus-notify test" as a desktop notification.
Or manually:
./systembus-notify &
dbus-send --system / net.nuetzlich.SystemNotifications.Notify 'string:summary text only'
dbus-send --system / net.nuetzlich.SystemNotifications.Notify 'string:summary text' 'string:and body text'
systembus-notify uses the sd-bus D-Bus library that is part of libsystemd.
Install it like this:
Debian / Ubuntu
sudo apt install libsystemd-dev
Fedora
sudo dnf install systemd-devel
The simplest way is to call the dbus-send tool.
Shell:
dbus-send --system / net.nuetzlich.SystemNotifications.Notify "string:hello world"
C (don't use system(), it's insecure!):
int pid = fork();
if (pid == 0)
execl("/usr/bin/dbus-send", "dbus-send", "--system", "/", "net.nuetzlich.SystemNotifications.Notify", "string:hello world", NULL);You can also use libdbus or another d-bus library to send the signal. In any case, systembus-notify must be running for the notification to pop up.
Original idea is from https://wiki.debianforum.de/Desktop-Notification_von_Systemservice_mittels_dbus (German).
Similar thing implemented in Python: https://github.com/xundeenergie/system-notification