wifi_alive_loop

#!/bin/bash
if [ $# -ne 0 ] && [ $# -ne 1 ]
then
	echo "invalid number of arguments"
	exit 1
elif [ "$1" = "-h" ]
then
	echo help
	exit
elif [ "$1" -eq "$1" ] 2>/dev/null
then
	echo "script started with value of $1"
elif [ ! "$1" ]
then
	echo "script started with default value 2"
else
	echo "numeric value or -h"
	exit 1
fi

while true
do
	printf .
	if [ "$(wifi|grep off)" ]
	then
		echo
		echo "it's off"
		echo "enabling wifi"
		wifi on
	fi
	sleep ${1:-2}
done