echo $1 | 
awk '# romanum -- convert number 1-10 to Roman numeral"

# define romanlist as list of roman numerals 1-10
BEGIN { 
	romanlist = "I,II,III,IV,V,VI,VII,VIII,IX,X"
	# create array named numerals from romanlist
	split(romanlist,numerals,",")
}

# look for number between 1 and 10
$1 > 0 && $1 < 10 {
	# print specified element
	print numerals[$1]
	exit
	}
{ 	print "invalid number"
  	exit
}' -