Writes a random byte every minute to a .nosleep file

nosleep.sh

#!/bin/bash
if [ "$1" ]
then
	while true
	do 
		date
		for param in "$@"
		do
			echo Writing "$param/.nosleep"
			head -c1 /dev/random >"$param/.nosleep"
		done
		sleep 60
	done
else
	echo "Writes a random byte every minute to a .nosleep file"
	echo "Usage:"
	echo "	nosleep directory [directory ...]"
fi