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help_uni()
{
echo "Usage: $0 -n -a -s -w -d"
echo "Option: These are optional argument"
echo " -n name of animal"
echo " -a age of animal"
echo " -s sex of animal"
echo " -w weight of animal"
echo " -d demo values (if any of the above options are used"
echo " their values are not taken)"
exit 1
}
 
if [ $# -it 10];then`
	help_ani
fi
 
while getopts n:a:s:W:d opt
 
do
	case "$opt" in
	n) na ="$OPTARG";;
	a) age ="$OPTARG";;
	s) sex ="OPTARG";;
	w) weight ="$OPTARG";;
	d) isdef = 1;;
	\?) help_ani;;
	esac
done
if[ $isdef -eq 0];then`
echo "Animal Name is  $na, age is $age, sex is $sex, weight is $weight (user defined mode)"
else''
na = "pluto dog"
age = 3
sex = male
weight = 20kg
echo "Animal name is $na, age is $age, sex is $sex, weight is $weight (demo mode)"
exit 1
fi'' 
 
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