Cron with notify-send

Question

I need to show a notification from a cron job. My crontab is something like:

$ crontab -l
# m h  dom mon dow   command
  * *   *   *   *    Display=:0.0 /usr         


        

Answer 1

Similar to nmax above, I also solved the issue by setting DBUS_SESSION_BUS_ADDRESS environment variable. However, I am using a combination of Linux Mint 19 (xfce4) and XMonad and for some reason, I don't have the process xfce4-session running. Instead, I found that xfce4-terminal is (usually) running, which resulted in the following line in the beginning of my script:

eval "export $(egrep -z DBUS_SESSION_BUS_ADDRESS /proc/$(pgrep -u $LOGNAME xfce4-terminal)/environ)"

This resolved the issue for me.