#! /bin/bash

export DISPLAY=:0

case "$1" in
  "day")
    feh --bg-scale $HOME/usr/pics/island_day_by_arsenixc-d6ctqon.jpg
    ;;
  "night")
    feh --bg-scale $HOME/usr/pics/island_night_by_arsenixc-d6cz757.jpg
    ;;
  *)
    echo $"Usage: $0 {day|night}"
    exit 1
esac