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--- blog:linux:notify-send-cron [30.09.2010 16:48] – eanderalx
+++ blog:linux:notify_send_cron [17.01.2011 22:24] – eanderalx
@@ Line 1: / Line 1: @@
+====== notify-send from cron ======
+**tested with Arch x64 and Gnome 2.3 **
+  * If you send an notfiy-send from a cron and use gnome then you normally get an error message.
+~~READMORE~~
+<code>
+libnotify-Message: Unable to get session bus: /usr/bin/dbus-launch terminated abnormally with the following error: Autolaunch error: X11 initialization failed.
+</code>
+  * The right User Environment is missing in crontab.
+===== Solution =====
+  * You have to save your dbus-session ID and have to know the screen to which the message is send.
+  * e.g.:
+<code>
+echo `set | grep DBUS_SESSION_BUS_ADDRESS | cut -d "=" -f2-4` > /tmp/dbus_session_hostname
+</code>
+  * or (only with root privileges):
+<code>
+sudo grep -z DBUS_SESSION_BUS_ADDRESS /proc/`/bin/pidof gnome-session`/environ | cut  -d "=" -f2-4 > /tmp/dbus_session_id
+CONTENT=`cat /tmp/dbus_session_id`
+echo $CONTENT > /tmp/dbus_session_id
+</code>
+  * Now you can give this informations to notify-send and send the message to the correct user environment
+  * e.g.:
+<code>
+sudo -u username DISPLAY=:0.0 DBUS_SESSION_BUS_ADDRESS=`cat /tmp/dbus_session_hostname` /usr/bin/notify-send Inventur "daily inventur complete"
+</code>
+  * With "sudo -u" you can send the message from root crontab to a special user else it will send to the owner of the crontab.