LinuxQuestions.org - desktop image rotator

Thanks for the tip Zaskar :)
I played with feh for a while and it is a nice tool, but I still couldn't get the looping quite the way I want it.

So I thougt I'll use "hsetroot" and try to script the rest.. The result appears to work, but my bash scripting skill are very rudimentary, so I attached the "proto" below for anyone with better experience to comment.

Usage for setup: --setup <image folder path>
Usage for execute: <image switching delay in seconds>

Code:

#!/bin/bash



# If setup was requested, just build the image list and exit

if [ "$1" == "--setup" ]; then

  find "$2" | grep -i .jpg > .background_list

  exit

fi



# Make sure the image switching delay is not unreasonably small

delay=$1

if [ "1" -gt "$delay" ]; then

  delay=1

fi



# Get the number of images in the image list

img_no_max=`awk 'END {print NR}' .background_list`



# Set the next root window image, delay for a while, repeat..

while [ 1 ]; do

  # Get the order number of the next image in the image list

  img_no=`cat .background_no`

  # Get the image name, according to the order number

  img_name=`awk -v no=$img_no 'NR==no {print}' .background_list`

  # Display the image

  hsetroot -center $img_name



  # Increase the order number for the next image.

  # Reset the count if last image has been displayed

  img_no=$[$img_no+1]

  if [ "$img_no" -gt "$img_no_max" ]; then

      img_no=1

  fi

  echo > .background_no $img_no



  sleep $delay

done