Sie wollen nicht immer dasselbe Hintergrundbild haben - KDE bietet zwar eine Funktion zum zufälligen Wechseln der Hintergrundbildes, aber Sie benutzen Gnome, einen anderen Windowmanager, oder gar keinen.

#!/bin/bash
# sev_images.sh - Wechselt das Hintergrundbild des Root-Windows
# (c) by Ingo Blechschmidt
# Sam Jun 16 16:30:31 MEST 2001
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Ingo Blechschmidt
# Arberstraße 5
# 86179 Augsburg
# E-Mail: iblech@web.de, http://www.way.to/uselinux/
# Tel.: +49 / 821 882955
#
# 

if [ ! -e /tmp/.X0-lock ]; then exit 1; fi

aa=$1
e=`ls -1 $1 | wc -l`
d=$[$RANDOM%$e]

b() {
  c=$1
  for ie in `seq $c`; do
    shift
  done
  /usr/X11R6/bin/convert $aa$1 $HOME/bgroot.xpm > /dev/null && {
    /usr/X11R6/bin/xsetbg -onroot -smooth $HOME/bgroot.xpm -display :0.0 2> /dev/null
    rm $HOME/bgroot.xpm 2> /dev/null
  }
}

b $d `ls -1 $aa` &

exit 0    #;

*/4 * *   * * /usr/local/bin/sev_images /opt/kde/share/wallpapers/