#
# Created by Peter A. Murray
# peteruta-AT-yahoo-DOT-com
# Pick a random jpg for the Gnome desktop background
#
# Walk a tree looking for jpg files and pick one at random. Use that file as the wallpaper for the desktop.
# My picture files are in many sub dirs and all the little hack I saw used a single dir to get the image.
# So I wrote the following little bash script.
# Put it in .bash_profile if you want a new wallpaper everytime you open a new bash :)
 
# choose input tree
#
export BACKGROUND_DIR=~/Desktop/bild/2005
#export BACKGROUND_DIR=~/Desktop/bild/2006/Winter-Jan

# build up the array
array1=( `find "$BACKGROUND_DIR" -name *.jpg | tr 'n' ' '`)

element_count=${#array1[*]}
arrayPos=$RANDOM
# get a random number less than length of array
let "arrayPos %= $element_count"
picToUse=${array1[$arrayPos]}
# set the background image
/opt/gnome/bin/gconftool-2 -t str -s /desktop/gnome/background/picture_filename "$picToUse"