#!/bin/ash

is_on() {
	[ "$1" = "ON" ] || [ "$1" = "on" ] || [ "$1" = "YES" ] || [ "$1" = "yes" ] || [ "$1" = "true" ] || [ "$1" = "TRUE" ] || [ "$1" -ne 0 ] 2>/dev/null || return 1
	return 0
}