Problem with crontab and tilda

[dayoflayo]

Hello, so i've got a script that automatically change my wallpaper, and in this script, he launchs an other script that kill tilda and then relaunch it with differents options.
When i launch the script manually, no problem, but when it's crontab, i've got this problem :

after lauchning it manually :

dayoflayo@dayoflyo-laptop:~wallpapers$

after crontab :

$

here are my scripts :


#!/bin/bash

cd /home/dayoflayo/wallpaper
# nbr=$(find -name \[0-9]* |wc -l)
find . \( -name "*.jpg" -o -name "*.jpeg" -o -name "*.png" \) > list.tmp
sed -e 's/.\///g' list.tmp > list2.tmp
tab=list2.tmp
image=($(cat $tab))
nb=${#image }
toto=$((RANDOM% $nb))
file=${image[$toto]}


sudo mkdir /home/dayoflayo/num_wall
sudo chmod 777 /home/dayoflayo/num_wall
echo $file > /home/dayoflayo/nom_wall



chemin=$PWD/$file
gconftool-2 --type string --set /desktop/gnome/background/picture_filename "$chemin"
gconftool-2 --type string --set /desktop/gnome/background/picture_options centered
#echo $chemin

/home/dayoflayo/tilda.sh $file


#!/bin/bash

PID=`pidof -x tilda`
kill -15 $PID
sleep 5
if (test -n "$1")
then
case $1 in
0.png)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
1.png)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
2.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
3.png)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
4.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
5.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
6.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
esac
else
wall=`sed -n 1p /home/dayoflayo/nom_wall`
case $wall in
0.png)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
1.png)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
2.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
3.png)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
4.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
5.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
6.jpg)
sleep 2
DISPLAY=:0.0 tilda -x 10 -y 700 &
;;
esac
fi

thx for your help

[ssam]

this is possibly to do with cron not passing your environmental variables to your scripts.

put


env > /home/USERNAME/vars_passed_by_cron.txt

in you script (insert your USERNAME), and compare the contents of the output file

vars_passed_by_cron.txt
with the output of the command

env
in a working terminal


maybe if you put


source /etc/environment
source /home/USERNAME/.bashrc

in your script it will get what you need

[dayoflayo]

I don't really understand what you said ( sorry i'm french lol ) so can you please repost my 2 scripts, inserting the command that you said plz ?
thx

[Mr. C.]

In cron, PATH is set to be minimal. You need to put the directory of your tilda application in $PATH.

eg. PATH=$PATH:/my/path/to/tilda

If this doesn't solve the problem, you will need to show output from your cron job. Add some debugging print statements.

MrC