#!/bin/ksh

# Select a random image from the background logo collection
# This could be used to configure a screen saver, for example.
#
# This works even if the filenames contain spaces.

# switch to the logos directory to avoid long paths
logos=/afs/northstar/common/usr/lib/X11/logos/backgrounds
cd $logos

# '*' is a filename wildcard to match all files in the current directory
set *

# Use the syntax for arithmetic expressions.  "%" is the modulo operator
# Shift arguments by a random number between 0 and the number of files
shift $(($RANDOM % $#))

# Output the resulting first argument
echo "$logos/$1"