--help

zufall --help
Usage: zufall /path/to/imagedir-or-file [/path/to/imagedir-or-file]
  -d, --delay=DELAY          number of seconds an image is shown (default 900)
  -s  --maxsize=PERCENT      maximum size in percent (default 150)
  -b  --minborder=PIXEL      ignore --maxsize if the remaining border would be
                             smaller than --minborder (default 100)

  -l  --list=FILE            load list of images from file
                             - format is one directory or file per line
                               (absolute path!)
                             - can also be a collection from gqview
  -S  --sequential           don't randomize the imagelist (useful with -l)
  -c  --command=COMMAND      execute COMMAND on every picture change
                               %c gets replaced with the color
                               %i gets replaced with the image
                               %w gets replaced with the scaled width
                               %h gets replaced with the scaled height
                               %% gets replaced with %
  -n  --no-set               don't set the background
                             (but execute command if given)
  -p  --passes=PASSES        exit after given number of images

      --help                 display this help and exit
      --version              output version information and exit

SIGNALS:
  HUP                        change background
  USR1                       info
  TERM                       exit