Bash script - Changing wallpaper randomly using feh from crontab
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### /home/pejman/scripts/change-wallpaper.sh

    #!/bin/bash
    PATH="/usr/local/sbin:/usr/sbin:/sbin:/usr/local/bin:/usr/bin"
    DIR="/home/pejman/Downloads/Wallpaper/"
    FNAME=$(ls "$DIR" | while read x; do echo "`expr $RANDOM % 1000`:$x"; done | sort -n | sed 's/[0-9]*://' | head -n 1)
    DISPLAY=:0 feh --bg-scale "$DIR/$FNAME"

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### Commands

    chmod +x /home/pejman/scripts/change-wallpaper.sh

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### crontab -e

    0 * * * * /home/pejman/scripts/change-wallpaper.sh &> /dev/null

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_BY: Pejman Moghadam_  
_TAG: cron, feh, wallpaper, bash, random_  
_DATE: 2013-12-24 22:59:29_