Shell Script to reverse command line arguments

Program

#Zero arguments error
if [ $# -eq 0 ]
	then
	echo "Can't have zero arguments!"
	exit
#While parameters don't become zero, get the input and shift it
else
	while [ $# -gt 0 ]
	do
	  rev="$1 $rev"
	  shift
	done
	echo $rev
fi

Output

$ chmod 755 reverse-command-line.sh
$ sh reverse-command-line.sh 32 56 12 73
73 12 56 32