File globbing rules in Bash
#http://www.infoworld.com/article/2613338/linux/linux-how-to-script-a-bash-crash-course.html?page=3
#The asterisk matches anything
file.*
#The ? denotes a single character
file.?
#Use square brackets to reference multiple options
file.[ab]
#To select based on ranges of the alphabet or numbers
file.[a-d]
#Negate a matche with the ^ character
file.[^ab]