Sending session DBus message from system cron job?

[Michael Schuerig <michael@schuerig.de>]

I'd like to disable the desktop search indexer while the cron-triggered 
backup is running. I've figured out the relevant DBus messages I need 
for that:

qdbus org.kde.nepomuk.services.nepomukstrigiservice \
 /nepomukstrigiservice isSuspended

qdbus org.kde.nepomuk.services.nepomukstrigiservice \
 /nepomukstrigiservice suspend

qdbus org.kde.nepomuk.services.nepomukstrigiservice \
 /nepomukstrigiservice resume

I'm still looking for an elegant way to find all running sessions. 
Currently, the best I can think of looks something like this

. /usr/share/acpi-support/power-funcs

CMD=one of the above

for x in /tmp/.X11-unix/* ; do
  displaynum=`echo $x | sed s,/tmp/.X11-unix/X,,`
  getXuser
  if [ x"$XUSER" != x"" ] ; then
    su -c "$CMD" $XUSER
  fi
done

Well, it works, but it sure isn't elegant.

Michael

-- 
Michael Schuerig
mailto:michael@schuerig.de
http://www.schuerig.de/michael/