random-background.sh

#!/bin/bash -e
user=$(whoami)

fl=$(find /proc -maxdepth 2 -user $user -name environ -print -quit)
for i in {1..5}
do
    fl=$(find /proc -maxdepth 2 -user $user -name environ -newer "$fl" -print -quit)
done

export DBUS_SESSION_BUS_ADDRESS=$(grep -z DBUS_SESSION_BUS_ADDRESS "$fl" | cut -d= -f2-)

PICS_PATH="/home/endika/Dropbox/wallpapers/"

IMG=$(find -L $PICS_PATH -name "*.jpg" -o -name "*.png" | shuf -n1)
# gsettings set org.gnome.desktop.background picture-uri "file://${IMG}"
dconf write "/org/gnome/desktop/background/picture-uri" "'file://${IMG}'"

echo -e "$(date): ${IMG}" >> /tmp/wallch.log

# crontab
# * * * * * bash ~/Dropbox/random-background.sh
# * * * * * sleep 10 ; bash  ~/Dropbox/random-background.sh
# * * * * * sleep 20 ; bash ~/Dropbox/random-background.sh
# * * * * * sleep 30 ; bash ~/Dropbox/random-background.sh
# * * * * * sleep 40 ; bash ~/Dropbox/random-background.sh
# * * * * * sleep 50 ; bash ~/Dropbox/random-background.sh